8.8 swap
ok a less than thorough google search says the 90s mustangs were either 2.73 or 3.27, neither of which is too impressive haha. i'm almost positive the later post-facelift fox body cars of the early 2000s were even higher in the 2.60 range.
i know not everyone wants to build a street/strip donut and burnout machine, so you may want those gears. but it seems that the majority of guys prefer to at least be in the 3.55 and lower range, maybe not necessarily 4:10. trust me, 4.10 gears sound cool when you're chatting about how your car is built, but with a 3 speed auto and no overdrive, it's going to be less than ideal when you get on the highway and want to do 70+ with everyone else!