There's really only two basic thread sizes for older U.S. shifters, either original or aftermarket. Many come with adapters for both; some are one or the other, so figure out what you need first (you can buy adapters if needed later, too.) If you do a search for "shifter knobs" you will get more ideas than you know what to do with. Two huge threads, with some vendors listed here and there: http://www.jalopyjournal.com/forum/showthread.php?t=306164 http://www.jalopyjournal.com/forum/showthread.php?t=461148& Might also look at the Alliance vendors, and the H.A.M.B.-O-Dex too.
Hi, I haven't had a chance to list an ad on the HAMB yet, not sure if I can even do this here, I'm a Newbie here, but I also make shifter knobs amoung other things, check out my shifter page at WWW.eyeballjohn.com, 20% off all knobs for all HAMB's