Check out http://www.mittlerbros.com/. Alot of the race teams that build their own chassis use Mitler or Irwin-Smith. I have used Mitler notchers and bender. They are super nice.
Speedway motors sells a super low dollar bender. Bender & 1 set of dies 399.99. Or complete set of dies & bender for 799.99 check them out at Speedway motors.com.I use pro tools one shot bender & mittler bros. notcher.