FWIW, I used the search button and came up with no Octavagon, is that the right nomenclature?
Basically is a LWB modified 123 chassis, 1981, with a 240D and a stick shift tranny, sort of a LIMO looking car (boy I'd hate to parallel park this one!)
There is a strange second instrument cluster housing in the center of the dash.
See auto FS post I made today:
http://www.peachparts.com/shopforum/showthread.php?p=731644#post731644

__________________
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!

owner says that he will entertain offers ......... has been repainted from red to black ....... has some after market sunroofs mounted over back seat = manual??? ......... runs good = although slow and does either use or burn some oil ??? ....... does not want to try national marketing? ........ has half-oval type platform desk(in place of jumpseats) he used for office with an inverter still installed ........ says he has talked to a "collector" who facilitated a deal for one of these in the $15k neighborhood ........ my thoughts = would look cool with a flag at each front corner ......... nice enough guy ........ wants it to go away for $$$

Best I can tell, he's not having good luck with that...this isn't the first tiem I've seen this car posted on here.

It's a cool car, and would be especially so with a 617 turbo in place of the 616 but not worth it to me...

That thing's been on craigslist for at leas 6 months. From what I heard, it needs a new 616.

Sixto
95 S420
87 300SDL