http://www.youtube.com/v/CgPv5AFJPmc?version=3&hl=en_US&rel=0
A few years back I was looking at the Pan Am races, and there was a Corolla running mid 7's. The class required the use of the stock block for the car. Internals could be changed, but the block and head had to be factory pieces. Yeah, a 4age putting 700-900 ponies to the ground. And for the AW11 crowd, I've seen a few MR2s break the beams at under 10 seconds!