Gdads- great idea! its an odd one because both of the cylinders have the exact same casting number but they are clearly different. My Napa was not much help BUT- the brand Centric part#- 134.80004 is the upper replacement and is correct( also sold by parts geek but not in stock on their website but sold by them on ebay...odd). A little hard to find but an eBay search got my two of them. And for the lower i went to Partsgeek.com the lower rearward one from Dynamic Friction Company Part#- 141274-06211992. It is correct as well. Parts geeks upper is not correct from Dynamic Friction Company. the bleed port ends up on the bottom so obviously it will trap air in the top and you'll never be able to fully bleed the system. Mind everyone this is for the 15"x4" brakes
Also brake shoes got relined - Costed me $300 in cash to a local company. Unfortunately these 15" drums are an odd size and they don't get the linings all that often so it was a little more than usual the guys said. But they look great and should be much better than the oil soaked old ones!
