I did end up building this Super Sport with the traveling Campy groupset and was nonplussed with its performance. It's was the mushy 10-speed Campy and some other small details and overall aesthetic composition that, to me, had trouble 'committing' to a look, even as I tried hard to aim it. Stripped the frame, components go to other bikes, the frame sits, but not before I buy a (used) matching white water bottle cage. Believe it or not, the matching-to-the-paint red and white bottle cages are what kept me from selling the frame (well, after building it up to do so). The thinking went, "I can't sell a bike with cool matching bottle cages! I gotta give this thing another shot."
Off goes a full set of 6400 parts from my '84 Super Sport and onto this. Bingo. This thing is looking good! Time for pictures and a test ride.
Ride Report: This is the, presumably standard Schwinn upper-end road bike feel. Geometry is very similar to same-year/era Prologues. Differences between it and the Paramount are 58cm TT vs 59cm TT for the Paramount, and 49mm of calculated trail (50mm fork rake) vs 60mm of calculated trail (40mm fork rake). HT and ST angles between all bike are identical. I like me some sub-50mm trail, so this fits the bill. I will swap out the cool-looking-but-uncomfortable (to me) Turbo saddle for a newer Prologo (also black, don't worry) and re-ride. For now though, the basic attributes of solid, stable yet agile, if a little punishing, are the names of the game. Good bike. Hoping to replace the brake pads because they are old and suck (while feeling terrible), and perhaps go dark grey or black with the chainrings to match the 6400 pieces and/or black "3rd color" theme.