Is it possible to retrofit an OM606 head onto the 603 block?

I am looking for a W124, I'd love to get either the 603 or 602, but everything I have found is pretty dang ragged. I've resigned myself to I'll take a car with bad paint and acceptable interior with a good working mechanicals, or vice versa a poor mechanical car with good paint and interior. Well, everything I've found is poor all around. Except for the 94/95 E300Ds I've been able to find. I don't like the prospects of a normally aspirated diesel, but the cars are much cleaner and in good running condition.

This leads me to my next step. I want turbo diesel, and I want it to be mechanically injected. Searching yielded nothing, seems like nobody has asked this question. Looking at the heads/blocks they seem to have the same bolt pattern, but obviously this isn't something that can be discerned from a photo.

Eventually I want to stuff a turbo OM606 into the W124 with a manual transmission. When I do this, I'll have the NA 606 to play around with. Since getting a 603 block is relatively inexpensive I started wondering, can the 606 head just bolt on? Certainly I will need a new timing chain to accommodate DOHC. But will the head and head gasket bolt right up to the block?