Taurus at Dover International Speedway (formerly known as "Dover Downs International Speedway") and finishing 43rd, last in the field after crashing on lap #27 on the front straightaway. With Akins Motorsports, Walker's best finish came at the Carquest Auto Parts 300 at Lowe's Motor Speedway. He qualified tenth and finished fourteenth. He also had identical runs at Kentucky Speedway and New Hampshire International Speedway, where he started ninth and finished nineteenth and completed a minimum of 199 laps in both races. Ultimately, Walker's tenure at the Akins team would be cut short after the Zippo 200 at the famed Watkins Glen International road course in the Finger Lakes region of New York State (not the city). During the race, he became entangled with NASCAR Busch East Series champion Matt Kobyluck and crashed in Turn 4. After this incident, Walker was laid off and relieved of his driving duties with the team. Because Kahne could still not run every race, Walker's replacements would be Mike Wallace and later A. J. Foyt IV, grandson of A. J. Foyt a former four-time Indianapolis 500 winner, who would briefly take on the #38 team full-time in 2006 before being released. Walker spent the remainder of 2005 competing part-time in the USAC Silver Crown Series, driving Kahne's #19 entry. His favorite race was the Ted Horn 100 at DuQuoin State Fairgrounds, where he won the pole (starting first) and finished in the third position. Walker's 2006 racing season began in stock cars once again. This time, he attempted another ARCA Stock Car race at Nashville Superspeedway, driving for Vision Racing (not to be confuse with Vision Racing, a separate entity that competed in the Indy Racing League). Unfortunately for Walker, his #37 2005 Chevrolet Monte Carlo was not fast enough to break into the starting field, and the team was issued a DNQ for the event. Walker spent the remainder of 2006 returning to the World of Outlaws Sprint Car series, driving the #5 Forbrook Motorsports entry. His best finish in the regular series was a third that occurred at Huset's Speedway in Brandon South Dakota. In five All-Star Series events, he had two second-place finishes, both coming at Red River Valley Speedway, where he also had a pole position. In addition to these events, Walker competed in a National Sprint Tour event at the Missouri State Fairgrounds, where he started twelfth and finished seventeenth.