No. You are better off carefully cutting the harness tape open and fishing the extra "stuff" for the ECU out of there. This includes the ECU, but if you are tricky you can splice into the original distributor pickup wires. If not strip them out of there.
Here's the "thing" about the brown bypass (IGN2) and the "run" (IGN1) normally dark blue. The whole deal is that the "run" goes dead when twisted to start. So the only power available for starting is the brown IGN2. This is done right in the ignition switch. Both those wires come out through the bulkhead connector
It is IMPORTANT to be careful hooking up the MSD......
ONLY the two MSD coil wires should be hooked to the coil, NOTHING else, not the tach, nor the radio suppression cap.