The two engines used very different engine management systems. We did that install on a car years ago and had no problems (actually it was a 500 into a 380). I am pretty sure we used all the 380SL management system.

What kind of fuel dist is it? Is it a KE with EHA or a K-jetw/Lambda using a frequency valve?

I think you would be best suited to finish the system that is working with the fuel dist as the controllers have to work together.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician