Had an '89 406 I sold about 3 years ago. Short wheelbase/torque motor made for some interesting hill climbs. Rear brake was a pain in the behind. Overheated and would lock-up. I would pour enduro jug water on it to free it up. I installed a drilled rotor which helped although didn't completely eliminate the problem. I installed KX footpegs with a Scotts Performance adapter kit, the stock pegs are tiny. I also adapted a CR clutch lever to aid in the stiff clutch blues. Had to go through the trans, parts were very expensive. Be careful of the combination shaft for the kickstarter/shifter. That was a pricey piece. Bought mine used for $800.00 in 1995, sold it for $1800.00 in 1998. Other than being a "******* Step Child", parts from every continent the bike was fast, handled great and was a blast. Dead even with my buddies new-at-the-time YZ 250. Good luck.