Another Idea: Auto Club Raceway in Fontana has Test 'N Tune next Saturday, 20 Feb '16. Go talk to the racers 'mopar or chevy' about who does their machine work? Good shops can do either flavor. You've not said what level of hp or performance You are shooting for? 512 is just displacement, not what performance You are working towards. It makes a difference in who can do the work. You can call Bob Mazzolini in Riverside. Go to the Winternationals this weekend and just ask reasonable questions if You are serious. Still recommend IMM, Indio, CA.