the newer 10 bolts are of D44 strength as they have the same size shafts, same spline count, same ring gear size, etc. I think the change was late 80s. The knuckles and outers are identical to Chevy D44 stuff, so all the D44 histeer stuff will work for the 10 bolt. You will just need a flat-top passenger arm (you should already have a flat-top driver's side arm) and steering arms to bolt to them.