Race version has a little more snap to it. Both versions are night and day over stock. For what you described as your application I'd go with 11:1. If you are interested give shoot me an e-mail @ tech@speedwerx.com I should be able to work out a deal for you.

 

yea i'll do that...... whats the hp #s for the 600 kit?

 

It's 15% over stock. But we normally don't talk hp #'s we like to talk real world gains. Over a stock big it's not even a contest if you can keep the rear end hooked up. Doug @ nicholas tested one on the drag strip and if I remember correctly it was a solid 10 mph gain in accel over stock.