there are not any specific to the 383.

there are currently 2 self tuning out of the box kits for general carb to efi change over where you are not running boost and trying to wring out every single hp out.

atomic efi from msd, which is realitivly new, the other is fast ez efi.

have heard good things about ez efi. several members use it here.

there are other choices, but not recommended.
for instance holley makes one again but their past performance in this market leads me to believe it is not a good choice.

mega squirt is a diy type system. you build it yourself.

edelbrock makes one, but was only for rb blocks last time I looked.

and I thought, but don't remember mopar coming out with a setup?

the first 2 are supposed to be the easiest to plug and play and most complete. But you are looking at around 1k for fast ez efi, probably closer to 2. Atomic list prices show it around 2500 or so.