If the only thing wrong with your old ECU is the glowplug system...
You can make the glowplug sytem a manual system if the tune in the old ECU is something you want to drive with.
Or you could send the old ECU to Kennedy and see if it can be repaired.
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews