6 cylinder gurus... need opinion

I don't know if Dan's remarks were meant as a shot at me...lol. But yes, I havent tried them. And no, I don't plan on trying. I spec my camshafts on something like this based on a combination of flowbench results, Pipemax, and my own experience. My question in regard to the regrinding was more around what are the limits with an existing core. If there's no experience here in that direction I understand and it's not a surprise.

Thanks for the tips and warning Justin. I have yet to even look at a slant head with an eye to porting, but I'll keep out of water with my sonic tester.