I have a cb 125 s (j) registered aug 76. The engine was a bit worn out when i first got it. Some aluminium welding to the cylinder head cam slot and a couple of bent valves from a previous cam chain assembly, no wiring loom. I went out and managed to buy a cg 125 runner field bike and put that engine in it to start out. I used this engine and the field bikes wiring loom with a bit of modification, and got it up and running and mot,d for two years. now into the third year with the original engine cam slot machine ground, and i am hoping it runs at the begining of the summer. A great run around for town to town runs. It does about 55 mph and is very economical, around 45 to the gallon, a bit more restoring to get it near to original. Ride On Honda 125 users. O#\o"