I converted my yz450 to street legal. I used the wr450 crank and flywheel ect. to run the lights. I didnt cut any corners to build this bike. Now the issue im having is I cant change the sprockets around to get bottom end on trial and top end for highway without reving the engine out. I would like to know if I use a wr450 tranny if I will get both? I think first gear is lower and last is higher but im not sure? Also as far as I can tell all the gears are different and one shaft is different? I dont want a loss of power. My buddy has a cr450X enduro and its a dog compared to mine. I just need as much advice as I can get. $500 just for the parts to change is alot so I wanna know if its gonna make an improvement. Thanks for the help.