We just got some 8" Hoosier Quick Time DOT approved slicks for our big block powered 66 vette. We will be trying them out soon. Basically they are slicks with three lines on them. Anything will be better than the street tires. Last fall we ran a 13.45 at 110mph and had a 2.5 sec 60 ft time. This winter we added headers and got the slicks. The headers really woke the car up and with the slicks we are expecting mid 12's. We will find out soon.