Blaine, ok this is what I am talking about. You can not just change a pulley and get 850rwhp "easy"........period None of those cars are just pulley changed they are all sprayed. I believe the post you made 100% from evo but fastlanes no way, if they did pull those numbers there is no way it will last. Without more than a pulley change there is no way anyone is pulling 850+ rwhp out of a 500. Believe me I was shoting for 800rwhp and I am running a smaller pulley than most on my KB and am not hitting 800 yet. I will not run the smallest pulley that KB makes for the 500 because you need to run C16 with that pulley and a few more hp is not worth the cost of the fuel IMO.
Oh Im with ya on reliable. I won't take mine past 700 to wheels. And anything past 800 to the wheels requires race fuel pretty much and you will be on a knife edge of whether or not your engine will go boom. My definition of "not easy" is anything that involves taking the engine apart.