When Paramount production ended in Chicago in 1979 and moved to Waterford, WI in 1980, new variants were introduced. Basically '81-82 were 100% custom built and were known as "Elites." In '83 "Standards" were introduced as framesets only, and were as you might guess, made to standard sizes. These were available until late in '84, and then complete bikes were offered. I'll let those who are more expert in this area explain the mid to late 1980s Paramounts.
Elites and Standards are on the rare side, especially the Elites. One way to tell the difference is to look at the decal style.
Elites in the '81 Catalog:
My '83 Standard: