well thats good to know, i stand correcteddstrbdone said:Well I had to know so I went outside today and measured the inner C's on my waggy D44 and the inner C's on my 78' F250 HP D44. I measured balljoint mount surface to balljoint mount surface. Exactly the same. The only difference was the beefiness of the C's and the thicker axle tube. So I am game on for a six lug F250 HP D44. Now if my tax return would just show up. I hate to wait.