I'm new to 4.6's Just got a 1996 gt auto... Wondering what all its gonna taketo get it into the 12's I'm figuring nitrous but My plan is, 4.10's, x pipe, cat back, cold air, torque converter, shift kit, drag radials
first do the pi head and intake swap. then either a blower or lots of nos.
4.10s are perfect gears for autos. CAI wont do much for you but make the engine bay look better. it will help the car breath better, but any power gains will be minimal.
full PI swap, UCAs/LCAs, subframes, VT stage I cams, FULL exhaust, slicks, 31 splines, tune, stall converter, 4.10s/4.30s, jerry mod, weight reduction, practice.
or just do the full PI swap, stall, VT cams, exhaust, nitrous and tune.