This little coupe has a 4.3 V6 Vortec engine with minor mods in the back. It's been lightened and has run a best of 12.5 in the 1/4 mile on nothing but engine and street tires. We're figuring with some adjustments, we can get into the 11's naturally aspirated. After that we might looking into a blower which should drop us even further. Not bad for a car that you can still drive to the track and back!