410'

I would be running at least a 4.10 gear,afterall my 6pk Bee i use to own came factory with them,just run a taller tire. Air Gap intake would up the torque for you and a 750hp would probably be best suited for a street driven car.I run mildly P&P Eddy heads and would never go to a factory cast head unless i was running a Stocker.
Your choice in converters will make a huge difference how the car leaves the line. My 408 Aspen R/T fell on it's face with a 4800 stall compaired to the 5500 i usually run.
Your street car should be fine with the 3500 but 4.10 gears a must.
Good Luck