I must be the first one up in the central time zone of the US.
I have heard of someone doing a FI but, if I remember reading it correctly it is a big, big, undertaking.
not sure all that it takes but there has to be a control, wire harness, the injectors, and I am sure much more.
First question: How would the injectors be mounted in the head? That may be the biggest and hardest one to solve.
Good luck with your project.
Bubber