In 80, it could be any of the above. That was a transition year. Seems like the 80 models are different for some reason, but I don't recall what.
If your shift pattern is low loc-low-n-hi-hi loc, its a NP203.
If it's all aluminum case, it's a NP208.
If it's an iron case, w/ 4 low-n-2-hi-4 hi, it's a NP205.
I can't say I've ever seen one of the other unnits in a 3/4 ton. Just my experience.
I'd say NP 205 is the best all around, except for weight. I never had any confidence in a chain drive t-case, like the 203, 208.
Be sure you get one for hte same trans that you have. The splines are different between manual/automatic/TH400
Last edited by packratwrecker; 03-19-2005 at 10:59 PM.