I need a 1984 CDI box for a vf1000F Interceptor. There are two boxes and I need the one that has (7 WIRES) I have the five wire box. They are in the tail section of the bike. I need the one that has the MB6 at the end of the part number because there are two sets. Each set has two choices of box#1 and 2 choices of BOX#2. I do not know if you can run a mb4 box with a Mb6 box. If you know please let me know thanks. I am willing to pay of coarse.