The only way I would attempt a project like that would be with a custom designed intake manifold with individual injectors for each cylinder, and a factory type computer system programmed to the engine displacement and firing order by someone like my brother. He has been doing computer modeling of new electronic parts for the major auto manufacturers for 20-something years, on a contract consultant basis. He designs parts on a computer, runs them to failure with a proprietary program he designed, without ever building a prototype, and predicts failure rates. At one time he was billing out his work at the rate of a thousand dollars a day, and customers were on a waiting list for his services. He has probably raised his rate since then.
Jerry