1/2" head, 5/16 coarse thread, goes in the two forward holes of the 3 speed top shifter plate. It may fit others as well but I do not know.
Attachments
1000015428.jpg (167.97 KB, 82 downloads)


1947.2 GMC 1/2T SWB panel
1947.2 GMC 1/2T long bed
1948 GMC 1/2T short bed