351 Cleveland with Fuel Injection
There are several companies that make universal efi kits that use converted carb manifolds. Accel dfi, F.A.S.T., edelbrock are just some of them. It will cost a lot and there will most likely have to be some fabrication involved. You will also have to convert your entire fuel delivery system (pump and lines) and you will also have to deal with a lot of wiring. If you do deciede to go with the fuel injection there are several magazines that have done simular projects (efi on motors that never had it) and they could be very helpful. As for mechanichal fi unless you car is only raced, dont. The part throttle driveabilty sucks and they are hard to tune. Hop this helps.