In 2001, Bob Bills would become a full-time modified chassis manufacturer with Bills Built Race Cars.

From his humble beginnings, he has turned Bills Built into a powerhouse.
In 2007, his Bills Built modifieds won track championships, a Kansas State IMCA Championship and a 3 peat in the NCRA Modified touring series. Nationally, Bills Built modifieds made headlines with a USMTS Feature win in Texas and qualifying cars for the IMCA Super Nationals. Bills Built cars are proven winners.In the Bills Built philosophy of business, Bob Bills, prides himself on each and every car that is turned out at his shop in Wichita, Kansas.