This project will require more than just mechanics & machining skill. This will take some applied science as well. The injectors will need to be mounted and sealed into the neck area of the intake where there is no material for doing so nor is there the provision for getting the angle of attack so the flow will be uninterrupted and the injection will be appropriate for intake and mixing without inducing a turbulence at the valve etc. The fuel rail should be easy enough if the injectors have a uniform LAY. The biggest issue would be deciding on MAF or MAP and then making it usable input for the computer. MAF would be easiest but more visible. The MAP would be more hidden but finding the and I mean "THE" correct map sensor would be trial and error as there are several hundred sensors to select from and without the specific Flow and Vacuum characteristics of this motors components It would be UN-calculable for US and if any component was to need modify after the fact It would all change ! Then, there are all the other sensors which are needed to keep the computer from Stroking out ! That is to say It would be a major head ache and I'm sure that I would stroke out first ! I touched into this type of project some yrs back when I put a corvette tuned port Eng into a Jeep. It took 3 different schematics to be able to meld the existing system into the added electronics, Lots of needed info that is hidden and must be searched for ! This project is Do-able But ! For me I'd be very likely to smile, turn about, and walk away ! The first off parts and mods, integrations, etc. would most likely be less than cosmetically acceptable, requiring additional engineering and machining to come up with the more cosmetic appeal you require, then with the new parts You start over making it all work as it should. My advise would be to read up on the racers who have been getting the last bit of performance out of these fine motors for many years, and follow there lead staying with a well chosen carb arrangement. Just my two cents worth ! No more !
Don
IH v-3 early model owner