from what I know the bell was bolted to the engine when the engine was painted , the tranny was not painted so most of the bell that was visable was painted but not the whole bell , with the cast bells they will rust so I generally paint them with Cast blast to look like raw iron first then paint them engine color , the alum is not as critical but Eastwoods Spray grey looks just like natural alum so I paint them with that to maintain the finish