All it's going to do is change the sound, any performance gains will be under 5hp and be unnoticeable on the road. I don't have any experience with it but the install looks straight forward. Measure twice, cut once.
FRPP HotRods Cams / American Racing Headers Long Tubes with catted X / Stang-Hi dyno tune
Saleen wheels / Steeda CAI / Corsa Xtremes, K Springs, Koni STR.Ts, UMI lca relo. Brackets/r lwr ctrl arms UMI adj. panhard bar / Camber plates / SR Strut Tower Brace.