I know MAD fixtures makes complete fixture retrofits for the dover impulse fixtures which is what was usually used on most DMCs. Vertical express also makes door operator upgrade kits using their new LD-16 operator which is a the same linear operator made by Wittur that KONE and Saveria have been using for years.
A better question yet would be why would you want to MOD a DMC? They are pretty much still fully supported.
