Help destroyed 7 1/4 in a /6 dart

You’d be better off finding a 73-76 A Body 8.25 - other than driveshft shortening, it’s a virtual drop in. Cherokee/Dakotas will require some mods - perches, shortening, etc. Are you planning on upgrading to LBP on the front to match the back? No, then I would see about finding a 65-72 A Body 8.75 with SBP axles.