That is the main concern with the B20A6, I have built a fully forged one in the past and that was very expensive to source parts for however not impossible. The same can be stated for the Mitsubishi engine but givens its size, presents an interesting option. It is an interesting point of discussion, because if you could fit any engine into the front of a EG Civic, what would be the best? Ideally I would like to stay FWD as going RWD would take up a lot of underbody aero advantages that the FWD layout presents.