[drummin89]

the 6 lug is listed for 41 thru 54, the 5 lug is listed for 41-50 & 51-59. The axles for the 3/4 ton are not the same as the 1/2 tons, but I swapped the 3/4 axle for a 1/2 ton axle so that problem is solved.

I posted this on the stovebolt and classic parts talk (Classic Parts of America forum) and this is the info I got so far

41-50 the upper mount holes on the spindle is drilled out for a 7/16" bolt, 50-59 they are drilled out for a 1/2" bolt.

also

Front wheel bearings fit 41-59 the ND part numbers #909052 inner and #909067 outer.
The front inner cup 2 7/8 OD - 2 21/64 ID # 909602
cone 1 7/8 OD - 1 9/32 ID # 909552
outer cup 2 3/16 OD - 1 5/8 ID # 909601
cone 1 1/32 OD - 3/4 ID # 909501

Front axle fits 41-55 1st ser cast # 3656872 33 1/4 offset.