BOSS Sprints, Diehl Modifieds, RUSH Modifieds, RUSH Sprints June 30th BOSS Sprint Series and RUSH Showcase: The Non-Wing 410 Sprint Cars of the Midwest-based BOSS Series will make the only tour stop of 2023 at Lernerville, and join the traditional RUSH Showcase. The RUSH divisions will compete: The RUSH... Was: Now: $15.00 Add to Cart