I only have QC cars and down here in Florida. The D-2 Midget rules keep them inline with the stock 1000 on gas...in fact we are looking at opening them up a little to make them more competitive any 2.0 can do anything to the heads and allow cams....Brad Noffzinger has 14 of these focus cars and the most BHP is 158 compared to a stock GSXR at 186 and weight 200lbs less. It does produce more torque with the bigger bore so they are some what competitive but DO NOT have the advantage some lightning sprint racers say they do....This is over a year of racing down here...It all goes back to "SETUP" and the cat setting in the seat when you take the sissy flap off the top....but then most would rather "BUY" their speed instead of the hard work and knowledge it takes to run non wing the wing racing....sorry for being so blunt but that is the facts!!!