A heavier vehicle than I have and a 2x6 would be better.... But my xterra and 2x4 does work great... and I had it already. 4wd is a must though as the board will skip if I’m in 2wd sometimes...
been there and done that a few times. nice. i went and bought the manual machine from harbor freight for 50 bucks. has the tire breaker and is good all the way up to about a 31 inch tire for breaking