I have a set of Warp 9 super moto wheels for my 06 WR450. I plan on using these for street riding. was wondering if there is a decent way to use the stock speedo? also, how far off will the speed calculation be? Ideas???? If you tell me to buy a vapor, also tell me what to do, so I don't have an exposed bearing on my Stock WR front wheel when I ride this thing in the dirt.