Not sure what you have done to the engine, but if it is a stock set up coming out of the shop you should be just fine with the Autozone mounts as they are just about like stock mounts. If that engine is coming out of the shop with like around 450 or 500 HP then I would recommend going with some better mounts like the Butler Performance Pontiac Polyurethane/Stainless Steel Interlocking Engine Mount, that Butler sells. Here is a link http://butlerperformance.com/i-24452915-...dbpi-2254p.html They also sell serpentine systems, but if you are going to go with a March system, you can get those cheaper through Summit instead of paying those higher prices along with the free shipping. Or you can check out CVF racing, they have tham and pulleys and cost a little bit less http://www.cvfracing.com/pontiac-pulley-systems-s/137.htm