Did the coupe come out in '86 at the same time that the sedan did? If not when did it come out. If it came out in '88 or earlier, there may be a few 5 Speeds out there.
Don't worry JCE, I'm not suggesting you turn into a manual transmission maniac like myself, I'm asking the question for myself.
Good luck in finding the car you want,
'84 Euro 240D, 516K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in