Did you try rockauto they have the Dana ring and pinion and an other brand for the bop rear end and don’t change the carrier you can get the correct spacer you will probably have to get longer bolts for the spacer the ones they come with are not long enough They have them in stock I just looked 390 373 355 336 273 You have to watch their are carrier breaks for the different gears so the spacer will be a different thickness anywhere from a 1/4 to 1/2 inch Theirs a chart on this somewhere Make sure you look at 8.2 bop
