the speedos were 85mph in the 1980s... early mid 70s is the only option for 100mph. is that what you mean by 100k?
the 70s 100mph speedos dont match the 80s guages exactly though., and then there were different ones with different warning-lamps cut-out windows for the lamp lenses etc in them, also.. and i also have a couple originall quartz cluster clocks im ot sure if i shuold keep them stashed or let them go or not.. probly never will put them in anything, trading them for something i can or wil use or do need would be best probly hmm.. im stilllllllllllllll trying to find any or all clutch link parts pieces mechanical old style before 1985 so i can finally ditch TH350 and go 4 speed in my old C20 finally.. hmm... but no one anywhere in this world seems ot have any of these parts pieces still yet.. let also possibility of any trading maybe... hmm.. all i want in life is to have drive own 4 speed, in this truck, finally... apparently too much to ask though... i do not like my th350 trans, i hate autos.,,, i just want 4 speed.. hmmmmmmmm.........