Yes, 1980 to 97 (The solid axle 50 started in 98.5, I think the last year was 97 for the TTB, I'll have to check)Isn't the only pre-'99 Dana 50 the TTB version?
In that case, the only thing that transfers is the spindle, bearings, wheel hub, rotor, and hub lock.
This is more of a general assumption, however it's incorrect.Dana 50's use dana 44 ring and pinions(8.5") and dana 60 outers. I prefer the larger gears(9.75").
Example of the Dana 50 TTB & Dana 60 (pre 1999)parts that interchange.Can you give me just ONE part number that transfers form a Dana 44 to a Dana 50?