Here is the Craigslist Ad Ill copy and paste what it says, pretty interesting if true
Yamahonki - Built by Team Yamaha in Santa Anna Calif. in 1985. Yamaha had no quad yet to stadium race. So they started with a Honda ATC 250R, added a Suzuki LT 250R extended after market front end and powered it with a Tri Z 250 two stroke motor, Motor was recently rebuilt by one of Cycle Barn's best mechanic. Extended swing arm, Extended axels, original Bill's pipe, new plastics, new chain, twist throttle. Its wide, Its long and Its fast. Truly one of a kind!!! Featured in Dirt Wheels Magazine 1985. Could use updated brakes and suspension. $1500 OBO
http://seattle.craigslist.org/sno/snw/4962531804.html