Very true, has to be the right car/right buyer. In my case, my very first car was a '68 straight six on the column that I sold off at the age of 19, regretted it every single day since. This time around I knew exactly what I was looking for and that I was willing to pay regardless the asking price. There are definitely not many of these L6/L22's left around that are unmolested. It took me four years of searching to find this combination and I travel from Virginia to New Mexico to get her.
Back to original question for rarity, there were more L22 made than L6's, about 46,000ish i6 coupes to 3,400ish i6 convertibles. As to where it was built, Norwood made something like 5 to 1 over Van Nuys.