I don't have any for sale but here
is what the engine side weights for both Bs and Cs look like and how they mount. As far as front weights go here
is what the front "wishbone" weights for a B look like and how they mount. As far as I know, there are no "knock-off" wishbone weights available so only the AC originals are out there. They are not that common but I have seen a few for sale over the years - expensive though. As I recall, a couple of years ago a pair of wishbone weights sold for about $300 not including shipping. Anyway, they would not fit a narrow front C. I don't know if there were ever any similar front weights for the narrow front C. I have seen some front wheel weights on a B that might also fit a C. I'm not sure if they were AC original or not.