I wouldn't... but if you do try to purchase from Reliable Resin, use your credit card and/or Paypal and keep track of when you placed the order, so you can file a claim if he doesn't deliver. As an aside, I have the MPC '70 GTO and the rear bumper is too wide on that too. Finally - as Bill and the others said, use a Pontiac engine. A BBC is nothing like a Pontiac.