Hello. A friend (yes,really a friend, not me incognito!) just purchased a 1991 Camaro with a supposedly "rebuilt, high performance" engine. It is not the original engine. The rear code on the block, on the passenger side near the dizzy says: 4088548. The tab on the front of the block on the passenger side has the following codes: V0808UPB, the partial vin is: TGS535204. From what I have found so far it could be a mid-80's 350? I can not find anything on the UPB part of the V0808UPB? I am also finding nothing on the TGS535204? I can see the stampings very clearly, I believe I am reading these correct. I feel bad for my friend, he purchased this car from E-Bay and it was grossly misrepresented. The more proof he has of the misrepresentation the better! Any help with this would be greatly appreciated! Thank you!