Rear wheels for drag racing

[Pyrotechnic]

Truck is a 2002 Silverado with stock wheels on it. Looking for a 6 lug wheel that will bolt on the back and let me run a nice drag radial or slick. The goal is a 28" to 30" diameter tire and a decent height sidewall. 15" seems to have the most tire choices. 16" has barely any sizes, and 17" has quite a few.

I can find lots of 15" rims that have the correct bolt pattern, but the back spacings are more for older trucks. For a example, a 15x8 or 15x10 with 4 inch backspacing would probably stick out like crazy and look goofy. If I could find a rim with more backspacing, it would work without looking goofy.

What does everyone do for those trips to the track without getting really expensive rims.