To much as in money? It can be done for around $200.00. It's your call. IMO your going to always have some sort of slip with a 6 rib set up.
too much in labor and cash
i already ordered a new bov and i just placed an order for a 3.25 pulley
my friend is running the same set up as me except his car is a gt he is using a 2.87 pulley and he has no belt slip making 10lbs of boost and 403 rwhp
i made 426 rwhp with a draw through at 9psi with headers intake spacer h pipe tb and catback soo i can see my self hitting somewhere around 412 rwhp with the new pulley and bov
if not ill just upgrade the intercooler later on down the road
its just soo much cheaper swaping out the pulley