Auto tranny for ‘67

[RMcCuller]

I have a ‘67 c10, short step that I modified from a previous resto. Among other things I put in a 327 from a Camaro. I did nothing to the tranny which is a 3 speed column shift. In researching it, I’ve determined that it is a Chevy 341 tranny which I don’t think is original. I have on going issue with the shift linkage which I’ve corrected several times but it continues to give trouble. I’m thinking of putting in an automatic with floor shift. Any advice on which may be the best transmission to use with this engine. I use the truck for cruising only, no racing. Any advice will be appreciated