I would get the vehicle and from there you can easily Identify the axles. I have had trucks that should be a D60 BUT someone swapped it out for an 8 lug D44 before. I went to buy it thinking it had a D60 and a divorced NP205. Someone changed the D60 to D44 and the NP205 to a dana 20 or some shit like that. Needless to say was a deal and I bought to sell the title/vin since it was pre smog and the rest of the truck for parts and made a little money but 1/10 the amount I would have if it had the stuff like it should stock under it.