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Inside Line Promotions – BILLINGS, Mont. (Dec. 12, 2016) – The North-American Speed Association is soaring to new heights in 2017. The NSA Series, which was revamped in 2016 when it held a half-dozen...

(Photo by Hurd Photography) In a show of unity to grow winged sprint car racing in the Pacific Northwest and Central Montana, the Washington-based Summer Thunder Sprint Series has partnered with the...