First off I blame all of you FF's on this forum for getting me off the couch and actually doing something....:huh After successfully avoiding vintage racing for years, I've giving in and building a bike. A little personal background first. In novice class I rode a Yamaha mx250, a cr250, and then a Bultaco 360 Pursang. Then in 1977 I got a new YZ400D and made armature on it. I got some wins on it and kept it for years after racing it. I got a new Honda cr250 , then in 1980 I got another new Honda cr250 and put a Mugen 360 kit on the older side port cr250.I raced the 250 and open class that year. The Mugen kit cost $299 plus $12.50 shipping. That included a cylinder, piston set, rings&gaskets, pipe, and some transmission gears. That's a bike I wish I had kept, but I needed the money for the next bikes. I bought a new 1981 Honda cr250 & cr450. Those bikes were awful and repeatedly tried to kill me. If you held the clutch in too long in the gate the clutch bushing would seize and take off with the clutch lever pulled in. The shock shaft broke several times (including the Fox Shock several times) and threw me over the bars. In 1982 I bought a barely ridden Husky CR250. I loved the bike, but I wasn't very fast on it. I kept it for maybe ten years, until the tranny blew up. I tore my ACL in 1982 and quit MX just a few points of getting my Expert plates. With all that said, I figured I would look for a late 70's EVO open class bike. I missed a few deals, and decided a few were to far away. I actually started looking for a RM 400 as they are pretty easy to still get parts for, and a good all around bike. I had good friends racing them back then, but never owned one. So I found one on CL about 70 miles away. He listed it with the atv's and snowmobiles so no one scooped it right up. He finally posted some picks, and it looked pretty good, except for a missing air box. He listed it as a 1980. I looked on EBAY and there is a 1979 complete air box. I bought it thinking It should work on an '80 even though the changed it during those years. The 1979 & 80 are very similar. It worked out for me that the bike is really a 1979 according to the serial numbers. So here's some pictures. A lot of cheap satin black spray paint and new mismatched plastic. But the basic parts were mostly there.