In my experience of test driving challenger, camaro and mustang, I have to say that the ZF box in the challenger made a huge difference. The box alone is worth the wait.
Can i get a PM for 105s squared? I know I have been requesting pm for quite a few of the wheels you had :) I hope I can purchase a set ASAP as my stang just arrived at the dealer
The installation of those kit could be a headache and I don't know if theres a shop in UK that does such. And I recall someone saying that procharger being harmful to the engine in other forum.
I went through the same situation deciding which mustang I wanna buy in the past years and I end up getting a v6. I can afford a GT but when I figured that the insurance is gonna be more than my monthly payment for my car, I just backed off as it will make no sense lol.
However, if you do want...