RE: Hey Jeff (or anyone who knows)
Rangeball, I' ve never used the NAP rest, but I' d suggest paying a little more and getting the GKF Golden Premier. They' re bullet proof, very accurate and simple to adjust.
Just like all prong rests, clearance depends on how much offset or helical you use. I doubt you' d have any more clearance problems with ACC' s than with any ICS type arrow.