The ZL1 started out as a 94 Camaro, I have even seen this car at Mason Dixon Dragway in Hagerstown MD about 6 years ago... It is a concept, not limited production, well I guess it was limited to 1 if you want to make that argument... And yes the 69 ZL1 was underrated for it's HP, it made closer to 500, not near 600, but that was common with the muscle cars of the era...
Cougar Bob I believe made the statement about the Porche(sp?) and the F40, I know the porche has a 3.2L but I thought the F40's had a V12... 2.9L is an awful small V12, I could be wrong, maybe your talking about a different F40...
