I will add to the list a little.
Spindles: Use from a Dana 44
Chevy 1/2 ton & Blazer late '72 to early '77
Jeep wagoneer, cheerokee or J-10 '74-'76
VIN's were standarized in the late '70's one of the digits ( can't remember right now) tells the year of the vehicle, helps keep to you cleaner. Emmision stickers also have the year printed on them.
If you find the correct spindle it will have the same size wheel bearing for the inner and outer which is the same as your currrent EB bearings.
Backing plate:
Same years and vehicles as above, but I have also used backing plates from the chevy corp 10 axles up to '82 could go beyond that but I never looked it up i think they went metric on the caliper bolts in the '80 sometime.
There are 2 types of backing plates 1 piece heave plate and a 2 piece which has tin for the dust shield part, the 1 piece is usualy on the later chevy's.
Hub Rotors:
'76-'86 Ford 1/2 ton 7 Bronco don't waste time on use here.
Get the new ones from Autozone Aimco 5492 for $25-40 ea.
Here is an AutoZone list someone put together:
#024196 0524 performance friction pads comp set $27.99
#095745 C503 RH disc brake caliper $12.99 +$10.00 core=$22.99
#095752 C502 LH disc brake caliper $12.99 +$10.00 core=$22.99
#048859 5492 brake rotor/hub comp. $30.99x2=$61.98
#788737 set 37 wheel bearing,Timken $13.99x2=$27.98
#788422 set 45 wheel bearing,Timken $13.99x2=$27.98
#704049 H5002 brake guide bolts $6.99x2=$13.98
#001799 313938 banjo bolts 7/16"x20x1 1/16 $1.99x2=$3.98
If you are going junk yarding make sure you have the proper tools:
Allen wrench I think its 3/8 for the caliper bolts, get the type that fits on a ratchet.
BFH
Wasp & hornet spray
PB blaster
chisel
hack saw
screw drivers both
cutters
Spindle nut socket
Breaker bar