[hemijoe]

You are right about the casting numbers i made a clerical mistake the casting on the block is 3955270, and the deck does match the car. if its not a copo then what is it. i am not a expert on chevy, i was going to buy a copo at a estate sell recently, but my business got to busy to leave. i bought this that it could be or not be a real car. thats why i am asking for advice.