Vortech V2 2005 mustang gt

[sporter]

Hey everyone,i just have a couple of questions about the pulley size that came with the HO kit for the 2005 mustang gt
There is a 3.6 on the car as far as i know that makes about 10.5psi at redline,if i go with a 3.48 it should be around 12.5 max psi?and a 3.40 about 14.5psi?
also with a 6 rib do u think 12.5 - 14.5 psi would be to much and cause belt slippage?
yes my internals are stock , it may or may not blow hopefully not,i have a good dynoshop.
thanks