Just to clarify:stock 5 speed mach 1 on mustang dyno = 299.9 to the wheels and 307 torque.
go withh te mach 1. For one, it will hold value better than 06 GT. For 2, little faster than 06 GT as well. You can supercharge it, they have a P1-SC kit that will work good. Mach 1's have a 10.5: compression engine compared to the 2001 cobra which is 9:1. cams in mach are for low to mid range, no need to be for top since it will spin high being DOHC. I ran a 12.96 stock with mine hehe, 34 miles on dash and not broke in. Everything is great about it. don't have to worry about any stock camaro's hehe. In 1/8 mile, mach 1 is tad faster than 03/04 cobra, but cobra makes ground in 1/4.
all in all, go mach or go home //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif