you don't need a 22re motor to go with fuel injection,,,you can convert your engine now to f-i just buy getting the intake and manifold stuff from an re engine..The cost is dependant on what you want to pay,,,take you time and look around your going to find deals,,,or just go pay for it all at once and de done with it..i would guess you looking at about 200-300 bucks depending on what you have to pay for parts..I am sure if you look around you can get it for less then that though..