Hey there, I've got a Vortech S-trim on a stock 95 Cobra engine, and it's been quite impressive. The weak link will be your stock pistons though. Make sure you get the ignition module and adjust your air/fuel to be sure it's not too lean. Preingnition and/or running lean will shatter the stock pistons. Also, make sure you're venting the crankcase or you'll "blow a seal".