Well, there is always the option of replacing the whole engine, along with the propeller shaft (since mine rattles like a steam engine), but since I don't know the condition of the 250CE I think I'll let that wait. My engine is not too bad, and the manual transmission works great, so let's not upset the apple cart.

Still, this guy is sitting on a GOLDMINE. I haven't seen him yet, but according to his ad he is parting out all these cars:
'70 280SE
'79 280SE
'79 300D
'80 240D
'68 220
'72 220D
'72 250CE

plus a 3.5 V8, a turbo kit for diesels, bodywork for w114/w123 and a bunch of other goodies! Any suggestions for fun bolt-on stuff to buy? I'm already thinking about front fenders (given thay are rust-free) and possibly new seats, preferably leather.

If anyone is desperate for a specific Euro part I can look for it, mind you it will not be cheap to ship from Sweden.