KNOXVILLE, Iowa – Teams competing in either the 360 or 410 Nationals at Knoxville Raceway have until Wednesday evening at 6 p.m. CT to cash in on the Priority Aviation $20,000 Sponsorship Challenge.

The contest, benefiting the National Sprint Car Hall of Fame and Museum, is still a very close race and no driver in the running is out of it.

Iowa’s Carson McCarl currently holds the lead in the race over Pennsylvania’s Lance Dewease and fellow Hawkeye State native McKenna Haase.

Currently, 20 drivers have taken advantage of the contest.

Behind McCarl, Dewease and Haase are Wisconsin’s Bill Balog, Indiana’s Tyler Courtney, Tennessee’s Sammy Swindell, Oregon’s Tanner Holmes, Ohio’s Jac Haudenschild, Connecticut’s David Gravel and Ohio’s Sheldon Haudenschild.

Wisconsin’s Scott Thiel is 11th, followed by Iowa’s Austin McCarl, Indiana’s Parker Price-Miller, Minnesota’s Craig Dollansky, South Dakota’s Clint Garner, California’s Mason Daniel, California’s Kyle Larson, Ohio’s Chad Kemenah, Iowa’s Joe Beaver and Oklahoma’s Shane Stewart.

All that sprint car teams and fans need to do is have their prospective members or donors visit www.SprintCarStuff.com and order a membership there, or contact the National Sprint Car Hall of Fame & Museum.

If ordering online, specify the driver or race team in the “Notes” section on the final page.

The driver or team with the highest amount of donations returned to the museum before July 31 will receive the $20,000 sponsorship funding. All funds collected will go towards paying off remaining construction costs on the Bryan Clauson Suite Tower.

Memberships start at just $25 per year, but any donation amount will be accepted.