ok i have a 85 capri converted to a 90 mustang. with a 1971 360 mopar in it. it has 13:1 keith black pistons .60 over, j style heads port and polished , fully roller .700  lift custom grind cam,m1 single plain intake,proform 850 carb. it also has a 3500 stall and a torqflight b&m 727 trans with a 8.8 4:10. And as far as the head questions what would i need to get in order to put sum w-2 or sum w-5 heads ??? thanx