Most V8s are 130-tooth flywheels. The 143-tooth is pre-1970 HP big-block only, excluding the Hemi (172 teeth from 1966-'69). 143-tooth flywheels take an 11" clutch, which was never available with a small block. Everything V8 1970 & up uses the 130-tooth 'wheel.
The above only applies to cars. Trucks and vans? That way be dragons. I don't go there. :D
