I found a professional built 496 on ebay that they claim makes 690hp and 603 trq on pump gas. They use procomp heads,6.385 rods (i'm guessin stroker rods?), and a Hydraulic Flat-Tappet Cam (Lift: .578" (Intake)/ .603" (Exhaust), Duration @ .050: 244 (Intake), 254 (Exhaust), Lobe Seperation: 110 that they say is streetable but seems aggressive to me. I was wanting to run roller everything. Should i run that same set up i.e. cam size and rods?

once again thanks for the advice
Steve