Holeshot Wheels has a wide variety of styles and offsets, but as with most lightweight race wheels, the lighter they are, the more they cost! Their 8" - 10" wide wheels are in the 10 - 12 lb range.
Holeshot Wheels But another problem is that they are "race" wheels and not sold for street use because they, like other light wheels, don't take well to a "normal" street environment, which includes potholes, curbs, sudden turns, etc. B-bodies are fairly heavy so that aggrevates the situation. Some people do run "race only" wheels on the street, but cautiously and at their own risk.
If you carry a spare set of lighter wheels, you can also use softer compound tires which will help traction when you go to the track, but wear out quicker on the street. But then you also have to worry about changing them and safely storing the street wheels somewhere while racing.
There is no simple solution.