While this isn't really a GRMesq question, what say the hive mind on this. It would need to be able to run 8 cylinders with only direct injection.
It seems that the only aftermarket EMS manufacturers that support DI at all right now are Link, Motec and ECUMaster - not sure if they have 8cyl options though.
Edit: Found that Holley Terminator X can run 8 direct injectors:
https://www.holley.com/products/fuel_systems/fuel_injection/terminator_x/terminator_x_and_x_max_gen_v_lt_direct_injection_kits/