been trying to find some rotors for my 3/4 ton dodge D44 front. I don't really know what the axle came out of or what year it was made so i'm having a tuff time finding parts. The parts stores say dodge used drums up till 75 so i guess its newer than that and it came with flat tops on both sides so i guess it's older than 80. And the parts stores give me the option or HD brakes, 3500 pound axle and 4500 pound axle. And they say i can get a rotor, rotor and hub or just the hub. i know i need the rotor and from what i can tell the hub is press onto the rotor. really i just need to know what the axle came out of and whether its a 3500 or 4500 pound axle.
i found these numbers on it
to the right of the diff cover 44-8e
to the left of cover 620121r
can someone help me out. i looked on the dana expert website but i guess niether of those numbers are the bill of materials numbers

ok, i have ordered and recieved both of the rotors that autozone had for a 79 3.4 ton dodge truck. they were both wrong. the 3500 pound axles hub hole was WAY to samll and the 4500's was about a 1/4 inch to small and wasn't as tall as my stock one. i called the stealership and they don't even make rotors for the 70's dodges.
WHAT THE HELL DO I DO ! i pulled these numbers off the rotor
102805
and WFM3
measurements are
12 13/16 across the whole rotor
8 5/16 on the raise part that the hub sits on
5 1/16 where the hub passes through the rotor
and the raised part of the rotor sits 2 1/16 tall
anyone have any ideas on how i can find a new rotor. it would really suck to order carparts.coms rotors or parts americas and wait 2 weeks and them be worng. they list the same options as autozone.
anyone know of a book with the measurements or rotors and part numbers?
i really need some help. big dogs is next weekend and i'd love to make it
thanks

just talked to a different dealer and he says he can get the hub and rotor ass. for 550!!!!!!! he gave me the part number 4089275. all i need is the disk itself. starting to look like i can go get chevy outers for it for the price of one rotor. anyone know somewhere else to get his thing?
thanks