I'm sure the cabs are inter-changeable,(for the Chevys,anyway),from '60-63,64-66. I used a '63 pick-up,(c-20),harness,for use in a '60 2-ton,and had no problems with any of the connections,including the dash. This was the last year of the curved windshield,and the wiper arms were inter-changeable,as well. Hope this helps.
