The D-jet controls the injectors in 2 groups of 2 or 3 by the points in
the bottom of the distributor, 2 sets of them.

I wonder if you could use the ignition pulses (like the tachometer does).
That would give you a pulse for each cylinder and you could probably arrange
it to be about 180° off (on the distributor) so it would inject at the
beginning of the intake stroke.

(I glibly blather this not knowing 2 beans about aftermarket EFI systems!)

I suspect that some of the D-jet components might be pretty workable with
the aftermarket system and would save a lot of custom fabrication. The
temp sensors are pretty standard, the manifolds and injectors are good, etc.

Hope you and all the others down there have a blessed and prosperous new year!
--
George Downs, The "original" Walrus3, Bartlesville, Oklahoma