Fuel injection with a 6-71 on the street.

I am in the process of gathering parts for a 340 with a 6-71 on top for 72 Demon, 3102 lbs without me.. I have most of the engine from the heads down. Forged crank, 8.5 to 1 +.030 forged pistons, X-heads (open chamber) with 2.02/1.60 valves. Have yet to decide on a cam. Fuel will be 91 octane as that is the best available here. Boost will be no more than 10 lbs but probably 8 lbs. I will run thicker Cometic head gaskets to lower the compression a little more. The tranny is a 727 reverse manual valve body with a trans brake. Rear is an 8 3/4 with 3.23 shur-grip. Tires are 275-60-15 M/T's. I will also go with some kind of boost referenced timing controller.

I am undecided on whether to run carbs or fuel injection. If it's carbs I will probably go with two 750 holley's, boost referenced. My problem is I don't know much if anything about fuel injection.
What parts are needed to run fuel injection on the street? Is it hard to do? Does it have to be electronic or can it be mechanical? I just don't know what is involved.

If you need any more info on the car, let me know and I will post it.

Jack