Soooo you want to attemp the ol 500 or should I say 489.9. Anyway you'll need a 90mm sleeve, I'm sure Greg from CWR can get that for you, now you need somone to move the crank pin up 6.25mm, and put the Kodiak rod on. Next a bit needs to be taken off the base of the cases for the monster sleeve to fit. The only thing you need from the Kodiak is the jug and rod. JE can make you a piston.Yeah your looking at with all the other mods you got like 50HP, it will be a monster. BTW I have a certain Powroll Race cam with like an hour on it that will compliment that tremendos long stroke duration. Remember not only is the stroke longer but the Kodiaks rod is longer increasing piston duration at top and bottom dead resulting in better cylinder fill. Mickey did do his homework with this motor.