I went through this about a year or so back when I switched my '68 to five lug all around using a junked '72. I couldnt find any five lug axles that would fit the six lug axle housing. What type of rear end do you have? 10 or 12 bolt, could you swap the posi and carrier out of the six into the five? More hassle to be sure, but sometimes to get what you want it is. Dont forget when doing the front disc swap to get the tie rod ends as well.
