Last thumper i owned was a 03 WR450 converted to a wide ratio yz 450, removed lights, e start, etc... yz cam etc... oh the suspension was done too, wr suspension was way too soft. Been riding a Cr500af for last 2 yrs, so i have fallen out tof the loop. I'll be looking for a 4 stroke with the 60HP RHC or other mods eventually, to replace the cr500af. any obvious reliability issues? do they make a wide ratio tranny kit? larger radiators? easier to convert YZ450 for hare scrambles and trail riding, or WR450 into serious wood weapon? I don't want the extra weight, of electric start, but want the added coolant capacity, wide ratio tranny, Oh ..are the big bore stroker kits reliable? Are the pumped up Yami or Honda more reliable? Thanks doods!