It'sa Chevette! Get the marks lined up and call it good imho.. But, the guy wants some info on the cheap and it isn't like he can even gain a lot of horse power, but he wants whatever it can give. I get it. Yes, there are many ways to skin this cat, and even if you find an error, what'cha gonna do, custom grind an offset key? I doubt any/many speed parts existed and I ain't looking up a cam for a Chevette! LOL..