I have a pair of 3/4 ton spindles from a 91 Sub 10 bolt. I swapped my 6 lug 10 bolt to 8 lug and didn't need these. I believe older model rigs need the larger spindles for 8 lug swaps. $25 shipped
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here's a pic of the spindles. I re-used my old ones for my swap, but these came with the rotors and backing plates that I bought. what I remember from my research was that 77 & up d44's and 10 bolts use the same spindles on the 1/2 and 3/4 ton models. so your 72 needs the larger spindles (if my memory hasn't failed).
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