I just got the aftermarket ac delete bracket but i need to buy the belt since its obviously smaller. What size/napa part# is this belt?
Thanks

Darty Dave seems to have this nailed...

Here's the part # Lindsey racing has for the belt that goes with their delete bracket 999-192-290-50 I would venture an uneducated guess that it's a 5 rib, 29" long.

conti 6 pk 720
So a 6 rib 720 mm long

720 mm is 28.34" FYI

For this aftermarket bracket, there is some room for a slightly longer belt if you can't find that exact size. I believe the one I found locally was 29.5", and there is room to spare.