paxton pulley size ?
 

I have a paxton 2200 novi that currenty has the stock pulley.
I am putting in a forged rotating assembly this week and then I want to put a 15 psi pulley on the SC. I can't find the stock size from anyone so I don't know what size I will need t accomplish my goal.
I have measured my pulley and it measures 3.411 O.D. but that doesn't match any of the paxton pulley, and I don't know if I am measuring it in the correct way.
Can anyone clear this up for me.
Also I saw an add for Reichard Racing anti slip SC pulleys? anyone use them?
Thanks