If you can get the Megasquirt working that would give you what you need to run the 460cc injectors and more turbo options too. The NA route is also doable but the biggest hurdle is getting a better intake manifold. I ran mine for a couple of years without the turbo using 315cc injectors, SMT6 and an overclocked ECU and it worked very well. You are already part way there with the cams, rods and valves. Once you have a method for tuning and the intake manifold figured out it puts your build on a different level. What compression ratio are the pistons?I had a feeling i overshot my original target so at this point im assuming i should just use my megasquirt 2 or just stick to an NA build for now?