Looking for GT350 Valence Friendly 3" Exhaust

So I currently have the Ford Racing Borla GT350 Sport Quad Tip with Rear Valence. This is a 2.5" setup that I have connected to my Kooks Long Tube headers. I'm also supercharged pushing over 700whp and it's still raspy after installing an H pipe, but better! I'm looking for a 3" setup that connects to my Kooks long tubes and still uses the GT350 rear valence and is convertible friendly(underside support braces). Any suggestions?

I've read that the GT350 catback is complete bolt onto a GT with a GT350 diffuser, except for the portion that connects to the cat. Maybe someone can confirm this.

I too was thinking about switching from the FRPP Sport (for GT350 diffuser) to a GT350 Borla ATAK or GT350 Corsa Xtreme axle back.

Why not just complete your Kooks system? I believe they have a dual tip muffler option and you'd be 3" all the way back from the headers. Plus the Kooks would be a direct connect to their headers.

You can generally use any of the 3" GT350 catbacks, but convertible friendly will be hard as there is no GT350 convertible so those exhaust may or may not work with the extra bracing; the 3" takes up more space and the 350 catbacks have different bends.

The convertible aspect may be the hard part. The 3" for GT350 valence is easy.

BruceStang said:

So I currently have the Ford Racing Borla GT350 Sport Quad Tip with Rear Valence. This is a 2.5" setup that I have connected to my Kooks Long Tube headers. I'm also supercharged pushing over 700whp and it's still raspy after installing an H pipe, but better! I'm looking for a 3" setup that connects to my Kooks long tubes and still uses the GT350 rear valence and is convertible friendly(underside support braces). Any suggestions?

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Do you have a video of your exhaust. I am getting the borla sport quad and I have o/r kooks headers as well. I am hoping it sounds good. I only found two videos of it and they were not good quality video.

SienarSystems said:

Why not just complete your Kooks system? I believe they have a dual tip muffler option and you'd be 3" all the way back from the headers. Plus the Kooks would be a direct connect to their headers.

Click to expand...

I ordered the Kooks 3" Full Exhaust with H Pipe for convertibles. It was the only 3" system I could find that still retained the factory undercarriage bracing. It should be here tomorrow and I'll have it on within an hour of ups dropping it off. I am hopeful this will give me the sound I'm after.
https://www.kooksheaders.com/2015-f...-3-exhaust-system-w-h-pipe-polished-tips.html

hulk_smash said:

I've read that the GT350 catback is complete bolt onto a GT with a GT350 diffuser, except for the portion that connects to the cat. Maybe someone can confirm this.

I too was thinking about switching from the FRPP Sport (for GT350 diffuser) to a GT350 Borla ATAK or GT350 Corsa Xtreme axle back.

Click to expand...

The FRPP Borla GT350 Sport Exhaust has the GT350 valance. I'm hoping the exhaust I ordered will allow me to retain the GT350 valance. There are some real GT350 replacement exhausts that retain the balance but remove the chrome tips attached to the valance. The Kooks exhaust has clamp on polished tips. I can leave them off and see where the muffler lines up with the valance tips or I can remove them and get some different clamp on tips - quad or oval

Sini5ter08 said:

Do you have a video of your exhaust. I am getting the borla sport quad and I have o/r kooks headers as well. I am hoping it sounds good. I only found two videos of it and they were not good quality video.

Click to expand...

I don't have any with the Kooks headers. I'm catless and it's very very loud raspy, nasty and I put in a H pipe to tone it down. That helped a little but still between 1800 and 3000 its too harsh. Below that it's fine and above 3000 it sounds great but I have to keep it in the sweet spot to keep it from sounding like a tractor. Keep in mind I'm Supercharger and pushing over 700 to the wheels. I just don't think the FRPP Borla is good with open headers and boost

BruceStang said:

The FRPP Borla GT350 Sport Exhaust has the GT350 valance. I'm hoping the exhaust I ordered will allow me to retain the GT350 valance. There are some real GT350 replacement exhausts that retain the balance but remove the chrome tips attached to the valance. The Kooks exhaust has clamp on polished tips. I can leave them off and see where the muffler lines up with the valance tips or I can remove them and get some different clamp on tips - quad or oval

Click to expand...

follow this thread:
http://www.mustang6g.com/forums/showthread.php?t=78749

I installed the Kooks 3" exhaust today. I had to remove the faux exhaust tips on the GT350 valance and trim the plastic to accommodate the new muffler tips. I will be looking for dual or oval tips to fill up the gaps. Sounds great. I will try to get a video this weekend