Chevy 350 fuel injected vs carb?

I have purchased a 69 chevy nova. i'm going to try and use this vehicle as a daily driver. at some point in the near future im going to do a complete overhaul on the engine. I was looking at the nice edelbrock 4 barrels and i got to thinking. If i pulled a newer v8, out of like a 2000 truck or something at a salvage yard, it would be fuel injected thus giving me better fuel economy but would it be better on horsepower? would it be worth it because i know FI is a fair bit more complicated then using a carb. but i guess my main question is would it be worth it.