Thanks for the info.
The pickup is listed as a G233. My understanding is it's the first roll-out of the E1 engine, which would later be the 320 standard. So I have a 222, with a 320 engine, and a number of unique measurement changes from predecessor to successor. And, yes, also a unique torsion bar.
The other question I have, is how many of these still exist? And how many were made back in 1961?
Can I post a pic on the forum? Just for clarity?