I believe a Ford F450 or equivalent will do the job or even a F550. I would not go less than a F450 or equivalent though. I own a 2010 1160. Looked at the 1165 extensively gave up on that unit after seeing the weight and the width of it (4" wider than a normal TC). They sure do look roomy though. I really like the island and the fact that you can get into the cabover without climbing over someone.