May 19, 2020· Apr 5, 2008 Location: Cali. ... run the stock heads, intake, block, carb (no double pumpers if the car came with a vacumm holley). You can run a 2 1/2 inch exhaust with either an H or X pipe, mandrel is ok, mufflers must be stock appearing and crimped, no flowmasters, dyno max ultra flow is the choice of the vettes, side pipes will kill cost ...