Catalytic Converter on a 65 Slant 6?

Hello everyone,

Thank you for the various replies. In looking into various other posts as well, adding a Cat would most likely be a poor idea. Clean air is a good thing, but potentially catching myself on fire would defeat the efforts. :)

I noticed that the body seal caulking in the trunk is getting cracked and hard. I also noticed that the trunk seal was not tight. I am going to start with plugging every air/fume gap from the exterior to the passenger area. I will also try synthetic at my next oil change to see if that is any help. I will look into high-tech tuning as well and see what I can find.

Thanks again for the replies.