Is the experimental slant six with four rings an urban legend - or did I get the real story?

Wow. Thanks for the pic - very cool>1125ci. Wonder how they connected all those cranks? Probably 5 distributers?
i had my own business i started back in 83 when i was nearly 30. Started with the proverbial one pickup (IHC one tone). We recycled pallets at first, expanded into cardboard, traded odd sized pallets for native stone, started making colored mulch from the final scrap (after using machines to dismantle odd sized pallets for repair lumber and lumber to build new pallets from used lumber), and then finally trucking - as this became a big cost.
Since for the first 10-15 years the deliveries were in the three state corners area (AR, MO, OK) (I was in NW AR) I stuck with all used equipment since I had my own wreckers (I would tow the load to the customer before taking the broke down truck home).
Started with old two ton IHC trucks; B210's from farm auctions. I had more than 20. Then got smart and went to tractors. Stuck with R190 and R200 IHC's. They would have these huge 501 and 450 straight 6's. I had several wreckers. Accumulated hundreds of trailer vans 40' to 53'. It was a way to avoid taxes and for what I paid I could always sell them for the same or more as storage vans down the road-which i did (but glutted the local market so bad I had to sell nearly a hundred for scrap).
The point was the GMC V12 built off the V6 design. I had a huge truck salvage yard I visited on a regular basis. It was 40 acres of trucks from 55 - 69. I was looking around and found a whole fleet of truck tire delivery trucks with these V12's. It was its own motor but interchanged parts with the V6. used one distributer, one gear, but two caps. Two manifolds with two one barrel carbs that looked like coffee cans.
I looked it up the other day and found pics where it had been adapted for racing - all chromed out - it was something.
I once put a 62 V6 GMC with a Clark 5sp into a 2002 Silverado when the 454 went down. It had a problem of rolling off in gear due to the gear ratios of the rear end and the trans.
If I had took the final step on changing out the rear end with the two speed, and the front axle, suspension, so i could run on 20" truck wheels I might have had a conversion production project. There were a flood of one ton GM trucks to be had with bad diesel 6.2 and 6.5 motors laying around.
Thanks again. Did receive a reply that the four ring two timing chain was a slant six used in industrial machines. It was a second hand story which was probably borrowed - which means it was probably embellished. I do believe a high ranking employee put an industrial slant 6 into a new car on the production floor - and possibly kept it illegally... and it could have been towed for that.