As far as I can tell, all '67s had the early speedo. Both my Military and dad's '67 parts truck has them and neither are what I call early. In fact, I've never saw a '67 that I knew for sure didn't have that speedo.
'67s were unique in themselves. They had one year only seat upholstery, interior door handles, dash knobs, door lock position, and the Sport package had dash and seat trim.
Dad's '68 U13 isn't getting much attention yet. Key word, yet! I've slowly gathered NOS parts for it and am still looking for some. Once we get the '73 taken care of we can focus on some others finally.