I picked up a 99 Yamaha Big Bear didn't have anything in it I run a ATV shop and it was seized up with the rings and broken scared of cylinder so I decided to turn it into my own creation and built the motor back std. piston" took jus a little out of the head "ported"brand new intake new carburetor on it trim the rags took a rags completely off actually trim the fenders lighting it up tons new switch new solenoid new battery new everything it's pretty wicked it' jerk the front wheels off the ground fast and I've startled a bunch of big bears that would never do that!!! It's the fastest big bear 350 that iv rode!!! But that's just it it ain't a big bear no more much lighter now. I'm gonna post some pics. Shortly and videos, if I get the cylinder head back together today, had to install some valve seals.