Your the expert that is having issues setting your timing belt tensioner and figuring out rather simple issues with your upper end build... Right? I don't think you qualify as an expert. Aliaz knows a lot but I sure haven't seen him endorse NA heads for turbo builds before. And btw, I worked at a Z specialty shop for a decade. I have looked at plenty of vg heads as well as every other L series and vq series heads. Have YOU ever done dyno testing with 30p and 40p heads back to back on turbo and non turbo setups? If not you are making some very bold assumptions and passing them off as factual information.
