SELINSGROVE, Pa. – Selinsgrove and Williams Grove Speedways have joined forces to offer the Hoseheads.com & Modern Heritage Back-To-Back-For-Jack 410 Sprint Car Bonus Challenges, at both speedways Aug. 28-29, in conjunction with each oval’s Jack Gunn Memorial races.

A native of Hancock, Md., late promoter Jack Gunn held tenure at both facilities at times between the 1960s and the 1970s to much success and since the early 1980s, both historic venues have staged memorial races in honor of Gunn and his promotional prowess.

So when fate found both Williams Grove and Selinsgrove Speedways planning to stage their annual Gunn Memorials on back to back nights, the races seemed to call for a little extra promotion.

On Friday night, Williams Grove will host twin 20-lap mains paying $4,000 each in honor of Gunn while Saturday’s Selinsgrove show offers a 30-lap main paying $5,000 to the winner.

If one driver can sweep both of the Gunn Memorial twin 20s at Williams Grove Speedway on Friday night, the track itself will award a $2,000 bonus to the lucky driver giving him an even $10,000 and that hot shoe will then have a chance to compete for more bonus money  in the Back-To-Back-For-Jack-Bonus-Challenge, sponsored by Hoseheads.com sprint car internet website and Modern Heritage of Mifflinburg.

The Back-To-Back-For-Jack Bonus Challenge will find a $3,000 bonus in effect should the sweeper of the Williams Grove twins go on to score the 30-lap, $5,000 to win Gunn Memorial at Selinsgrove Speedway on Saturday night, pushing his total three-race winnings to an even $18,000 while granting a total $5,000 bonus for the hat trick.

If two different drivers motor to victory on Friday in the twin 20s at Williams Grove and either one of those drivers can claim victory on Saturday night at Selinsgrove Speedway, he will pick up an extra $1,000 in the Hoseheads.com & Modern Heritage Back-To-Back-For-Jack Bonus Challenge, leveling that driver’s two-race winnings at $10,000.