Everyone is different. It is not like my 04 Cobra for sure. People should learn to drive first before finding a forum member saying the spring is the best thing ever. Keep reading, just as many say no change with the spring. Maybe I'm just old and know how to drive?
My first test drive almost changed my mind on purchasing a Mustang. The clutch was terrible, exactly how described by many on this forum. Lucky for me, I could not reach a price point that was acceptable on the car, and I passed. I then found another Mustang at a different dealer, with the same options. I test drove it, and was amazed at how nice the clutch was. Ended up buying it.
The stock exhaust is definitely different. I noticed it right away. Much more throaty. I had to do a double take.
Sticker was 46 and change. I am confident they would have dealt and she did ask me some buying questions but admittedly it wasn't what I wanted and she wasn't my regular salesman. I just wanted to see an 18 in person. She did say if I ordered one they could definitely make a deal since what they had wasn't what I wanted. I have bought two cars at this dealership and they always give me a fair deal.
I'd been driving manual cars for years before driving my GT. I drove it with the stock spring for about 2 months. It was far harder than necessary to make smooth 1-2 shifts. Immediately upon removing the spring, I had seamless 1-2 shifts. If you look at the way the pedal and assist mechanism is designed, you can see that the spring goes from being compressed to releasing right at the point where the clutch bites. This gives an odd sensation, very little feel of the bite point, and a pedal that wants to move when you don't want it to. It's very non linear. Every time I've gotten in a friend's S550 with the stock spring I'm reminded of how the first third of the pedal is firm, and then just falls away from you as you go past the inflection point. Try it. Of the hundreds who've reported trying it on this forum, I can only recall one who didn't like it much better.
I've owned dozens of manual cars including an 03 Cobra and a bunch of F-bodies legendary for leeching water into the rubber clutch line and causing the pedal to stick to the floor. I've never felt a clutch this inconsistent, it feels like the engagement point changes between every shift. It even threw my dad off who has been driving manual as a truck driver since the early 60's, every time he drives it he complains about the clutch being weird.
