Complete engine / gearbox for a BSA pre-unit 650 with all that you seein the photos. Only part missing is the little generator chain. It has been safely stored for over 25 years. Turns over nicely but will need to be stripped, cleaned and new gaskets fitted. A couple of minor chips in the fins. STD gearbox shifts smoothly. Rebuilt generator, carburetor. If you have a pre-unit BSA, this is just what you need for a working motor. I still have the Quebec registration but that lists the frame number. Engine serial number is CA 10 R8783 HHC. I am asking CAD$3000, not including shipping.