econo C makes alot of sense, and also, don't allow mods to heads other then milling and polishing the chamber. If you want less expensive, leave the intake alone. My experience is if you allow 1/2 inch runner to match, they'll go 3/4. Also, take the money out of the clutch by only allowing single disc 10 inch min. No computers or titanium driveline parts. No carbon fiber other then shaft for safety issues. and no, I haven't even ordered a drive shaft yet. you will still have a $20,000 dollar motor, but it won't be $60,000 or $70,000. I have other ideas, but we're a long way from that yet. I think if the comp guys don't want this, they still should have the last say. Let's be honest guys, they've earned their wings. Back to the heads, the manufacturer would have the last say on legality of winners, runner-ups, no 1 qualifier, and record holders. What say you?