IMSA on a Budget—Part 2, The American Challenge Series

While the illustrious history of IMSA is littered with great cars and great drivers, it’s easy to forget that the series also catered to young, up-and-coming drivers, racing on a budget, in much less “exotic” machinery. What follows is the last of a two-part tale of these fascinating IMSA undercards, from the new book “IMSA 1969–1989: The inside story of how John Bishop built the world’s greatest sports car racing series” by Mitch Bishop & Mark Raffauf. Click here to…