We have the V10 in our 2002 32' Itasca Sunrise, we've been all over the West with our MH. Pulls hills just fine. Pulled up the 8% grade out of Bullfrog on Lake Powell pulling our jeep wrangler toad with no porblems, (even passed a lizard), the engine does get a little loud but it's muffled enough to not be a problem for me.