well you have to have a rom burner and the programs so you can reprogram them into the ecu! and the 95 ex ecu is the p28 and it is perferct for reprogaming into a dohc vtec program! though watch out for the cruise control light it will come on! 95civex if ya get a swap keep that p28 and send it out or let kenji or someone local reprogam it for ya! people get p28 cause does same job and is cheaper!