I have a aftermarket one in perfect condition (not high volume), no issues came off of a 11.34 car with less than 500 miles on the cover .Short block was sold . IMO ready to bolt on comes with TA adjustable pressure valve and booster plate . PM me your email and I can send a few pics . $100 shipped .
Thanks for everybody's quick help! I have already purchased one, but a spare GM cover might be a good idea. I will take a look at what you have. Thanks guys!