It's only my opinion but I feel we've passed the time for carburetors in Pro Stock. How to implement EFI and, more importantly, how to police it would be the big hurdle. There will always be those who'll bootleg in traction control, $50K feedback shock absorbers, off-degree boring, etc. but with the correct specs in place, I think this could, once again, let the true innovators sift their way to the top. Only real problem is $, rule making/breaking and the transition timing.