If your truck is a Chevrolet, from 1963-71 then I've heard that the 1973-1979 3/4 & 1 ton K5 Blazer front spindles will work too. Those were factory 6 lug front disk brake vehicles.
Shouldn't be too hard to find one in a junkyard and should be quite a bit cheaper than buying the new conversion kits.
-ftyler
