I have seen and setup both style of injectors on the MF2 drivers. Personally I would use the EFi injector due to the flow pattern it should supply. However that will be the next question. Surely your not going to aim the injector at the opposite side of the charge carrier. It will end up in a pool of fuel just before the throttle body.

ideally needs to be placed on the sweeping bend flowing towards the throttle body.