I picked up a cool little XL100 with a lifan styled engine. I see 150FMG and a longer serial number stamped on the case bye the primary sprocket. It is a front clutch 4 speed with 1 down and 3 up. The wiring was all spun up around the primary sprocket and looks pretty tore up, and there is a big gob of JB weld on the head. Not a good sign, but surely fixable. It has some great compression. If anyone has a link to a site, wiring info, or a parts house that would be great. I have not found much on the web for this engine.