Well, I finally got the 1967 122S Home last night. I drove it for 632 miles before the dying gearbox started grinding in all four gears. I had to tow it back home for the last 150 miles with my 940.

While in the way down to get it I was erading a number of old "Rolling" magazines, including a multi-part article on the restoration and upgrade of a 122. They were transfering the rear disc brakes and brake booster from a P1800 to a 122. Sounds like it went well. MY 122 has had a lot of upgrades, electronic ignition among MANY others. However, the brakes have not been upgraded. I have a booster, but it is shot (can these be rebuilt?). P1800s are even more rare than 122s around here, but I do know of a 164 and a 140 at a local pull-apart. Aside from some engine parts, are any other brake parts compatable across these models?