The niece is driving the 240D this summer while I save my $$ for that $1700 paint job.
Replacing the head gasket on a 103 engine is probably a piece of cake compared to the 104 (just guessing from the way the engine looks in Adam B's pictures).
The car is not using any oil so I do not plan on doing any work on the head other than changing the gasket. The key thing to doing the valve stem seal replacement without removing the head is to make sure the piston on the cylinder you are doing is at TDC. You can look at the cam lobe position to determine this. Put the #1 piston at TDC compression and that is the postion the cam lobes need to be at in the other cylinders when you do the seals in them.