Debschrysler

I have a 1995 Dodge ram 3500 pick up with a V10, I have replaced wires, plugs and 4 fuel injectors. I now have a service code 43 which is telling me that I have #4 cylinder that insn't firing, i think I need to replace the Ignition Control Module but the part is dicontuined. If anyone has any ideas, or knows where I can get parts please help me out. The truck runs rough and has no power. Help please truck has been in the shop for 2 weeks.email: laforet@sympatico.ca