Well it depends on what kind of blower you go with. If you go w/ the Magnuson (roots) it'll have a flatter curve and make between 450-500 rwhp w/ intake and headers and tuning. If you go w/ a centrifugal like a Vortech or a Paxton Nove or an ATI Procharger you'll me makeing a lot more horsepower. The problem is the high compression of the stock engine. You can only run 5-7 lbs of bost safely. These cars will make around 550 rwhp. Now if you forge the bottom end and lower the compression w/ a set of 6.0 liter truck heads you can run crazy boost safely and make 650-700 rwhp. It all depends on what the owner has done. The cars can run anywhere from only low 12's to mid 10's depending on driver skill etc.