You could always take an old 10.70 bracket car, set up a ballast system with old barbells, and run 10.90 index. Keep the car basic with no stop or timers and keep the engine combo very basic+ mild so you don't have alot of maintenance. No-- Hold on--- That could never be competitive against all those cars with electronics.
Making money at racing is almost a pipe dream. I am satisfied with the fact that I have a hobby that gives me the opportunity to recover some of my expenses. Sometimes you have a GOOD year (don't break anything and win a few races). Other times you have a bad year( break stuff and don't win alot). It usually evens out. Just race for the love of the sport and you'll be much happier.
Eddie Bolton