I just put a deposit down on a 71 GMC K-20 pickup. It has 56K original miles and what the owner claims is an LT1 corvette engine from the factory. I don't have my hands on it yet so I can't confirm, but the current owner claims its on the build sheet. It does have the LT1 Rams horn exhaust manifolds though. While I cannot confirm or deny this, my questions are was it possible to order something like that back then, and if so, how rare would it be? I Can't wait to dig into it and see if it indeed does!