Yes, it's very high. if you're looking for OPS+ of 90 or better, and C fielding or better, the best guy with 500 PA is at 6.89 (Curt Welch).
'63 Maz would be the 49th highest player meeting those criteria. I think that a really high-end guy would probably end up well over 30... Maz will probably end up around 30.