I'm doing a front swap on my 54 Suburban using pickup and van parts. I have learned that the A arms (upper and lower) between the pick ups and vans are basically the same except the cross bar on the lower A arm on the van is bigger. I tried a 79 1/2 ton van and a 82 3/4 ton 5 lug and they are both the same. Both are 5 on 5 too.
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The vans are on the left. I compared them to a 3/4 ton and they look to be the same size. It will not fit the 1/2 ton.
Why not get 73 up ball joints and use the van knuckles? That's what I'm doing. I had some 65 1/2 ton A arms and put 73up ball joints in and bingo. Here's my build thread;
http://67-72chevytrucks.com/vboard/s...d.php?t=369297