I'm looking at buying a wr450f. I've been reading that stock they are kind of a dog are are really restricted for reliability and emissions reasons. If I get one I'm thinking of doing all the mods such as the grey wire mod, throttle stop, jetting, pipe, ect. How much does this increase performance, as I want a 450 to act like a real 450 and not an xr 250? And being as restricted as they are I've heard it helps with reliability...if it's uncorked and putting upwards of 45-50 hp, would it shorten the life span of the piston and rings? Just curious. Thanks.