That combo will run good on the street, especially with the 750 carb. If you want to make the most of the SD single plane, Eddy heads, and 2" headers however, which all will allow a 440 to breath north of 6k, you may want to think about a bigger carb. The 750 will likely start costing you power at around 4500 - 5000. But as said, it will likely run crisper around town than an 850 would.