I am almost at the point of engine fitting with my resto, I have a 1500sp with a nos crank & bearings along with a engle 100 cam 1600 b&p's with tidy sp heads, I have duel 34 ict's for it along with electronic ignition & silicone leads and a small flange header. I am wondering if I could improve my performance by fitting roller rockers and if so what ratio & type shoud I go for. Also if you have any other suggestions for a bit more poke without going bigger cc or turbo/supercharger, id love to hear it. thankyou.