In May 2017, Long announced he had reached an agreement with NASCAR to allow him to return to the Cup Series garage. He also declared his intention to field the No. 66 Chevrolet SS at the Go Bowling 400 in Kansas under the MBM Motorsports banner. The number was selected as tribute to MBM driver Mark Thompson, while the paint scheme was nearly identical to the No. 46 car Long drove in the Cup Series prior to his ban from the Cup garage in 2009; the green and yellow colors remained, though the red roof number was changed to yellow. Although the team received sponsorship from marijuana vaping manufacturer Veedverks, NASCAR prevented the company from appearing on the car after Long misspelled the company name in his sponsor submission to NASCAR, spelling it with an "o" instead of a "d"; upon further investigation by NASCAR, the sanctioning body ordered Long to remove the sponsorship. Long missed the first practice session before running 14 laps in the second session, followed by being unable to set a qualifying lap as he was one of 11 cars stuck in inspection during the session. This relegated Long to a 40th-place starting spot, from which he finished 31st.