Seems I've answered my own question, just wanted to put some info here for anyone else who may have one of these.
Appears they're manufactured by Uniden. I found the FCC ID on the back of one from a video, and Googled it, finding the FCC test information for it, which included some nice pictures of the board.
While this radio looks like a Cobra 29 / PC78, the board is nothing like what we are used to in those radios.
The final looks to be an IRF520.
Seems to be some adjustments for S/RF meter, final bias, and AM AMC.