This is what I'm running in my low deck 512. With 1.6 RAS rockers B3 Geometry set up 10.3 comp Trick Flow 240s M1 single plane both ported by Larry Smith with a 850 Thumper carb. Been to busy with work to dyno. But will be on the pump in about a week or so. I will post results. Hoping for any where between 590-610 hp. Will see though. Not chasing a number. It will make what it makes. But should be a real nice pump gas street engine.