8-track tape drives?

About twenty years ago I bought a dual tape drive "mass" storage peripheral from a surplus outfit, United Products in Seattle. It was for a long defunct personal computer of the '70s. The computer (which I only ever saw in a few ca. 1978 ads in Byte) was an 8080-based system, and I think it was billed as having color video graphics capability. I don't remember the name of the company. Anyway, the distinguishing characteristic of the system was the tape drive unit used modified 8-track tape decks. That's right, 8-track *audio* cartridges, the kind people make so much fun of these days. The drive was housed in a blue metal enclosure with a black vacu-formed plastic bezel for the two "drives." It had a DB-25 connector on the back, though it definitely wasn't a standard RS232 interface. As I recall, the tape head assembly in each drive had four read/write coils, and it could move to one of two positions, up or down, thus giving eight tracks total. Presumably this was to decrease the "seek" time. I managed to trace through the circuit well enough to figure out how to write and read back serial data on tape, at about 2400 bps, as I recall. I had some fun hooking it up to a C64 in the lab to prove the thing was actually working. I kept threatening a co-worker that I was going to write a driver for the monstrosity to use on the lab's CP/M machines. He had just built a Slicer, a 80186 SBC that was popular for a few years in the mid-eighties, and the thought of such a kludge horrified him. Heh. I foolishly sold the dual tape drive and all my notes at a Seattle Robotics Society auction sometime around 1989. I've done some poking around on the web recently, but I have found zip about this machine. Has anyone ever seen one of these tape drives? I actually have a project that, perversely, requires something like this. -RLN