v-6 in early A-body

Its easy to run factory injection with a 904 or 727, you simply have to notch bellhousing for crank trigger and use magnum flywheel.
I am curious about the crank trigger, and what it looks like. I do not understand "magnum flywheel", in relation to 904 or 727 unless that is starter ring gear, and I assume different for V6 and V8. If a picture of trigger "target" is available, it will help me greatly.

I think it might be possible to generate the crank trigger signal from the distributor with the addition of a second sensor and trigger there. At the same time, the ignition could be done direct fire, coil on plug. I can use same hardware I am developing for the V8 COP ignition. I designed a similar system for 2.2L engine, and used the OEM ECU for timing control, diverted to coils. The reason would be easier drop-in eliminating crank sensor and bellhousing mod. The EFI trigger would come from my ECU associated with ignition.

I like the idea of the V6 it removes weight from front, providing better handling balance.