SPARTA, Ky. - This weekend will see Justin Boston make his first NASCAR Nationwide Series start at Kentucky Speedway.

But first, Boston has other business.

The 25-year-old races full-time in the ARCA Racing Series and on Friday earned his third pole position of the season with a lap of 174.735 mph. Starting beside him on Row 1 in the ZLOOP 150 at 8 p.m. will be series points leader Mason Mitchell.

It is Boston's first ARCA pole at an intermediate track like Kentucky Speedway and third this season.

"I'm really pumped for tonight," said Boston, whose No. 25 Venturini Motorsports Toyota is sponsored by the race's title sponsor. "I think we have a good racecar."

Boston is pulling double duty at Kentucky Speedway. On the Nationwide Series side, he's driving the No. 20 Joe Gibbs Racing Toyota. Boston completed 31 laps during practice and was 15th fastest. His best lap (170.245 mph) came on his 26th lap.

Boston tested with the team last month at Nashville Superspeedway. The team's crew chief is Kevin Kidd, who was Joey Logano's crew chief in 2010 when Logano won his third consecutive Nationwide Series race at Kentucky Speedway.

"That definitely helped speed up the learning curve, for sure," Boston said of the test. "I tested with them and thought it went pretty well. I think today, so far, has gone pretty well and I think we'll pick up some speed in the second practice. It took a little bit of time to get me acclimated to the car in practice here today. Running a lot of laps helped but I think I need to run a different line and it took about half a practice for me to realize where I needed to run."

Mitchell entered Friday with a 50-point lead over Grant Enfinger in the standings with two races remaining on the ARCA schedule this season. Enfinger qualified 12th.

For Mitchell, it's the eighth consecutive event where he has qualified either first or second.

"It's pretty critical in the points championship we have going on because in the ARCA series the top three get points, so any little bit we can get late in the race for the championship helps," Mitchell said. "We now have a 60-point lead going into the race. I think it takes a little bit of pressure off myself and my guys to get the extra edge in the race to pick up more points. I think we have a really good hot rod for the race."

Daniel Suarez and Kyle Weatherman qualified third and fourth.

Ben Rhodes qualified fifth for his ARCA debut in the No. 41 Turner Scott Motorsports Chevrolet. The K&N Pro Series East champion is a senior at Louisville's Holy Cross High School.

Ten-time ARCA champion Frank Kimmel will start 14th in his bid to win for the fifth time at Kentucky Speedway. His last victory at the track came in 2005.