SECS S8 ECU will run using standard RST dizzi.
(Or any of the other suggested trigger combinations)
This will still provide accurate timing info for the ecu to use.
All that is required is an extra "reference" slot cut in the existing trigger vane.
(Does NOT need to be an accurate slot)

This will run FULLY sequential injection and can use any mix of cossie and/or
EEC4 sensors/injectors/valves within MINIMAL setup.
Use a cossie loom (or make a new one)

Also, You could run coil pack but this would look silly if retaining the dizzi !!!