Adding Catalytic Convertors to the Old Girl...

I would think its not a good idea. If the engine has had anything done to it where it is beyond stock, I would think that the cats would run way hot,Even if it's at a stock level. Gotta remember they are there to help "burn off" residual fuel. They may even get hot enough to cause a fire. One of the big three had issues with cats in the early to mid 80's being hot. Most vehicles that were carbureted had some type of system to lean it out. Just my thoughts.