what axle is it, they had the 7.5 and 8.8 live axles, if its the 8.8 my guess is it could be the same as a ford explorer as they had live 8.8's, but studs may be bigger being 4x4 axle, other than that u could try rally design as i got mine from them when i was building my kit car with all mustang running gear, a 7.5 may well be the same as a sierra or capri