This discussion gets more intriguing! I went onto Ebay and there seems to be listings for a lot of the internal parts, valves, cam gear, chain, exhaust mainifold, fuel pump, etc. (Even a valve cover) Some parts even say 230 OHC or L226 so I assume that those must interchange. On the Internet, I found several pictures of the Tornado installed in a vehicle but none showing how the front engine mounts attached. The carburetor is on the opposite side from the L226, but it looks like the starter and exhaust are on the correct sides (Like Kaiser) The transmission that I would favor for gas mileage would be the stick shift (and OD if they ever offered it). I found several comments online defending the engine after 1963 and claiming that all the bugs had been worked out, and that these folks have used them for years without trouble. Didn't the military also use them?
If I could figure out how to upload, I would post the pictures that I found. P.S. There seem to be lots of Tuneup charts and one engine manual available.