Rebuilding a 1979 Can Am 250 Qualifier II, and have a couple questions, if anyone knows the answers? 1) This bike has an oil tank but doesn't seem to have any oil injection lines or cable hole in the engine case: Did the 79 Qualifier come without oil injection or is it possible this is an MX engine? 2) This particular bike came with an alloy swingarm that looks much different than the 1980 and later arms. Know anything about it? As seen above, it has a cable actuated rear brake (instead of a rod actuated) and a different chain guide system. It also gives the bike a higher ride stance and more rear travel. Is this an aftermarket swingarm or a factory option, or possibly of a different year or model? I haven't pulled the left sidecover off the engine to see if it has an oil pump. It has been a lot of work on the wheels and brakes in an unheated shed to get it this far. Brakes and clutch are working, I actually put the pipe on and started it tonight. I really need to know if this is an oil mix or oil injection motor. The frame tank looks like it was used in the past but there doesn't seem to be anywhere on the engine to hook it to.