well for one the dana 60 i think only has 10 bolts on the cover lol but the 60 afaik did come in the rear of some trucks even pre 73. but i think they where mainly in vans, maybe burbs? when i do think of 60s i think of dodges for some odd reason lol. and it does look like a 44 hard to say but a 10 bolt will have ears that stick out on the bottom corners of the differential. how much?