Hello, I just got one of these old dinos and I love the power, but I digress. Anyway I have put an 02 xr250 complete front end on it, it already had an aftermarket rear shock. Well what I was wanting to know-if there are any experts on these old 450 and 480 bikes. I have a 83 480 rolling chassis and I was wanting to know if the engine, exhaust and airbox will work from the 450 on the 480. I like the gas tank, seat, bolt on subframe, swingarm, rear wheel, chain adjusters, and the more modern rear fender of the 83 as opposed to the 450..I don't see why not if the centercases are the same-which I believe they are..probably just changed the bore from 81 450 to 82 480, and then went 5 speed in 83... Thanks in advance..