I've heard that myself, but none of the info I have backs it up. All of the spec books I have do not list the 235/261 after '62. Bu then again, they also do not list the availability of th 261 in the 3/4 and 1 tons in '61/62 either. One more odd thing, I have a listing for the old Eaton 1/2 ton rear for '63 as a Posi option, odd.