YSL2
my mods are:
k&n drop in air filter
gotts mod (pvc)
spacers on rear O2 sensors (
The Gotts O2 mod with pics - F150online Forums)
315/70/17 tires (with 3.55 gears)
glasspack for muffler
am planning on removing rear cats and putting in pipe in their place
body lift
3" torsion lift
2" rear shackles
if he can work it where my CEL wont go off and i wont have O2 problems i would just dump it with glasspacks after the first set of cats