I just picked the quad up last week from my brother.
It's an 86 with a few things done to it. I got it with Silver Maier Plastics, a Laeger's Anti-Vibe Stem, a set of new extended A-Arms that aren't installed yet, a pipe and silencer which have no markings on, and a basic K&N cone filter in the air box. Oh yeah he also gave me a brand new still sealed in the box Hot Rods complete bottom end kit for it.
I pulled the carb to clean it and check the Reed Cage and noticed that the piston had a crack in the bottom of the skirt.
I already had plans to build it but I figured I'd do the biggest displacement I can where I can still use the Brand New bottom end kit I got.