Following up on this, I purchased Soarer's 240* > USB cable mentioned earlier in this thread and can confirm that it does work for this model. I still need to remap some of the terminal-specific keys using the software, but otherwise it's working great. As N6NG mentioned, mine also arrived with a number of broken rivets, so I decided to bolt mod it. I managed to find some screws that worked for this project (Brass #2 3/8" Flathead Phillips Wood screws) at Lowe's in the section with small baggies of screws. They did not have any #2 sized nuts, but as all 58 screws felt very snug (probably due to the wood threads vs. rounded machining threads) I felt confident closing it up without them.
Overall this guy cleaned up very nicely, and since most people I know could care less, I thought I'd share my hard work with some folks who could appreciate the endgame
Also figured it couldn't hurt to include some better photos of this specific model since it's apparently "new" to the fold.
Components after initial disassemble
PCB detail:
Logo detail:
Backplate post bolt-mod.
And finally, portrait of a growing family.