During this past year’s Ultimate Callout Challenge, there were plenty of awesome trucks on the track, but there were also cool trucks in the exhibitor area. Take Keith Porter’s Chevy 3100 for example. Keith did all the work on this truck himself, including swapping in an L5P Duramax engine with all the bells and whistles. Check it out in this episode of Diesel of the Week brought to you by AMSOIL INC.