I have a 3.40 pulley which is about 8psi I think. You can choose 3.4,3.2,or 3.0 pulley.As for as the work, it took them 11.5 hrs. That's what is says on the invoice.If you want give them a call.Their # is 732-780-0770.They can explain things much better than me and I don't want to give out any...