Lid for Ford Performance CAI ?

[luc]

The only thing you had to purchase was the lid? I. E. The GT500 lid attaches right onto the GT350 box with no additional pieces?

I have what is presumed to be a competely sock GT350 box as was supplied in the Ford Performance Power Pack 2 kit.

I also have the pp2 on my car
There are a couple of gaps that you have to seal. I used foam tape and weatherstripping.

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[RookieDDZ]

I also have the pp2 on my car
There are a couple of gaps that you have to seal. I used foam tape and weatherstripping.

Correct. PP1 car here. I installed the GT350 TB/airbox with tune and didn't love the open filter. I got the GT500 airbox with lid and it mates good to the GT350 intake tube. Just fill the connection with weatherstripping like luc mentioned. I also wrapped the back side of the air box with heat tape.
Temps are pretty good and I'm happy.