There are a lot more D-Jetronic parts being made nowadays for people restoring late-60s through mid-70s cars. Manifold Pressure sensors can be rebuilt with kits from places like Tangerine Racing.
The D-Jet "bible" is available at
http://members.rennlist.com/pbanders . The guy got ahold of electric schematics for the analog ECU and figured out what they really did. It's exceedingly impressive!
-soD