You will need a different driveshaft, the correct speedo gear, the clutch pedal and master cylinder, a manual tranny flywheel balance matched the the auto flywheel (see other posts on balancing, it's complicated), and a gearshift cover. Hole for the shifter (floor shift) is already there.
You could also fix up the column shift if you wanted, but I don't know why.
I could use the wood trim at the top of the front passenger door, I'm missing that bit.
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!