I have a chance to buy a 1966 C-10 that the guy says is the original 327 in it . The casting #'s that I can see all come back as the correct era , The engine ID ends with a YC which according to the front of the LMC catalog would be correct along with YS , YR , YH , and YD that would be correct for a 1966 truck .

Could this be real or a pig in a poke and should I be looking for other signs ?

Any advice would be greatly appreciated

Thanks

Dan