mk216v
Der Chef der Fahrzeuge
Happened upon them in a Craigslist search. No affiliation other than Matt at Speed Sports(first link) is well-respected in the auto community here;
https://portland.craigslist.org/mlt/ctd/5414835572.html
https://portland.craigslist.org/grg/cto/5413921852.html
https://portland.craigslist.org/mlt/ctd/5414835572.html
https://portland.craigslist.org/grg/cto/5413921852.html