Please help me with this

I need to take a dicision to use m103 or m104 with carbs for a vintage rally car.

M103 with only 1 cam ,without vvt, dis cap at cam looks easier than m104 (edis,crank sensor)

The m103 3.0 91-92 us spec,
what are the parts of the ignition ?

what I need to use this engine with carbs and have control of timing ?