I agree with those that recommend the hydraulic cam and lower compression. To coin a trite phrase, "back in the day" I had the 427 version of that motor (L-72). It was my daily driver and it was a beast. Had to adjust the valves at least once a month, gulped high octane leaded fuel and went through plugs pretty fast. Back when banks had drive thrus, it would vibrate quarters right across the tray while I waited for the teller. It would definitely run hard, but like the others said we have come a long way in 35 years. I also think you are better off with the oval port heads for general street use. The square ports are great from 4000-6800+ but for throttle response on the street and power under the curve, a good set of ovals ports might be better.

Good on ya for building a hot rod for your sweety! I'd do one for mine if I thought she would drive it.

Pat