thanks everybody, i think this bike was gold when it was new , its going to be gold now anyway, im thinking of stripping the tank and having it all gold, as it is white and chrome (chrome is no good ) as it is, thats a long way off just now theres loads of mechanical work to do , i havent had a close look at it yet iknow the rear wheel sproket has 49 teeth for sidecar work ,i think i will have to have a 42t one,I dont know wether bsa did a all gold tank.