My 383 is loving this!

The distributor looks like maybe no weights or vacuum advance. Is the spark timing controlled by the EFI computer as well?

One can do EFI much cheaper than $2K, but you must do more "roll your own" (Megasquirt, Howell) or buy slightly older models used. The advantage of the latest new models like this are self-tuning and easier install since they have more integrated sensors.