Click here for Approved Engine Rebuilders for multiple racing series... Select a series to view a profile and a link to their rules. Dirt Late Models Chevrolet Performance Super Late Model Series Crate Racin' USA Dirt Late Model Series DIRTcar Pro Late Models Crate Racin' USA Weekly Series Fastrak Racing Series Florida Late Model Challenge Series Great Lakes Crate Racing Series ILMS (Indiana Late Model Series) Red Clay 602 Late Model Series RUSH Late Models Southern Nationals Series Spring Nationals Series Thunder Series UCRA (United Crate Racing Alliance) United Late Model Association (ULMA) USRA Limited Late Models Wissota Dirt Late Model Challenge Series Open Wheel Modifieds Carolina Crate Modified Series DIRTcar NE 358 Modifieds DIRTcar NE Sportsman Modified GRIT Racing Series IMCA Modifieds IMCA Northern Sport Mods IMCA Southern Sport Mods Mid-East Modified Series RUSH Pro Mods RUSH Sportsman Mods UMP DIRTcar Pro Modified USRA A-Mods USRA B-Mods Wissota Midwest Modified Wissota Modified Stock Cars DIRTcar Stock Cars DIRTcar NE Pro Stock Crate Racin' USA Street Stocks IMCA Hobby Stock Series RUSH Pro Stock Series USRA Hobby Stock Series USRA Stock Car Series Wissota Street Stock Sprint Cars Ohsweken Speedway Sprints Rush Sprint Car Series Wilmot Wingless Sprints Asphalt Late Model & Stock Cars ACT Late Model Sportsman Carolina Pro Late Model Series CARS Late Model Stock Tour CARS Super Late Model Tour CRA Late Model Sportsman Series CRA Street Stocks CRA-Jegs All Star Tour Evergreen Speedway Super Late Models Granite States Pro Stock Series Lucas Oil Sportsman Cup Mid American Stock Car Series (MASCS) NASCAR Whelen All-American Series OSCAAR Hot Rod Series Pacific Challenge Series (PCS) Super Late Models RUSH Asphalt Late Models RUSH Asphalt Street Stocks Southern Super Series Wescar Late Model Touring Series Western Speedway Keg Late Models Asphalt Open Wheel Modifieds 602 Tour Modifieds 602 Tour Super Limiteds OSCAAR Modified Series RUSH Asphalt Modifieds SK Light Modifieds Asphalt Super Trucks Pee Dee Coastal Super Truck Series South West Tour Trucks Southeast Super Trucks