I found a sorta abandoned corvette coupe with a 350/300 engine and 3 spd auto and a/c "least window says a/c" and all the moulding and chrome has been stripped off or missing. Now i know its a 69 or 70 but how do i tell for sure. Plus i found the keys to the car in the gas tank, local told me its been sitting for almost 20 years. Body has no cracks on it or spider web type cracks. I also need to know where the vin number is locate on these cars and where the factory build sheet is located. I am new with corvettes i just recently got into them, so im use to chevy passenger cars. Appreciate the help.