[olddog]

I wasn't aware of a FE 8V air gap manifold. You may be able to do what you want. Injector open/close speed may be impacted by the angle it is mounted. It may impact tuning parameters.

Take a look at MassFlow. They are selling 4V setups along this line. They are also selling a new ECU under a different company name. It uses more current Ford sensors. It may have a provision to use 2 mass flow sensors on an 8V set up. I cannot remember for sure if it was them or someone else. This system is worth a look. Even if you don't like it, you should get a lot of ideas.

I like EFI, but it is costly to convert a car from carb to EFI or visa versa. Unless there is a problem you are trying to solve, you may spend a lot of money and time sorting out all the problems you create along the way.

There have been dyno tests of an engine with carb and EFI swaps that showed the carb made more power. Barry R told me of one test he did some years back. You may be able to find that thread. I'm sure there can be many factors, and the results will varry, but I would not assume EFI will make more power.