So the rear number is GM3858174 which decodes a 64-67 327. The front number is F0824HF, which I don't know how to decode. He wants 200 bucks and it's got the camel hump heads. They look like what I have on my 67 camaro, but I don't beleive its a camaro engine. Maybe corvette. Any help? Gonna put it in some kind of off road vehicle based on K5 blazer chassis. I've got the differentials, now I just need to get some kind of chassis and a tranny, and I could have a fun one.