Off the shelf a paxton Novi 2000 can handle 18 psi. I have 24,000 miles on a current set-up running 15lbs on 93 octane. 920rwhp. I use the 10 rib belt that you can purchase at NAPA. The pulleys are custom made by a friend of mine Doug Levin from DLM. Here is a nice TT set-up on my friend Johns car. All work performed at Heffners.
