The contention from the Chevy camp is that the ZL1 was a RPO and the cars were "assembly line" built, unlike some of the other cars like the LO/BO cars. They also came with a warranty, which is something that cannot be said of some of the other "non legal" entries. Take that for whatever it is worth. I still think that if someone got serious about a legal iron head BB chevy in a real "purpose built" car, that you can be very competitive in FAST.

At the end of the day, if you want to run at or near the top, you can do it with an entry from just about any of the big three. Some are more difficult than otehrs, but you can do it. And that is what makes it entertaining.