A 2.5 liter ecotec NA is not going to make a class 10 any faster. I'm enjoying reading this thread BTW. i think technical rally roads suit UTV's perfectly. What was the finishing comparison between 10 and UTV at this years mint? I know all the favorites in 10 took themselves out of the race. That course is both rough, fast and technical. Anyone want to waste 10 minutes for my reading pleasure?