Now that makes a bit more sense:redneck: Out of the box the afb will work better than the holley. That said I run a holley 600 vac sec. on my jeep (well I did) and am quite happy with it. It is however highly modded to work offroad. (spring loaded seats , whistle vents, jet extensions , lowered floats, small jets ect ect) The afb will work great just by dropping the float levels. Just make sure its size matched to your motor. Anything over say 600cfm on a 350 is too much carb for a stock type motor.