It would be feasible. Right now, I believe there is only one source for the system.
My thought process goes like this, original cars with original EFI systems are more valuable than cars without the system.
I am looking to buy a car, so it is not in my best interest to raise the prices.
I have demonstrated the parts are available and it can be done (twice)
The other thing going for me is the costs to recreate the system probably make it cost prohibitive.
On the outside chance my wife reads the forum, we probably shouldn't discuss the costs associated with this project in open forum. But let’s call it substaintial.