I need some advise. So I'm purchasing a 40 foot fifth wheel to full time living and rving. My truck is a 2006 F350 4x4 with about 450-550 HP and a 5R110 transmission. I'm going to be 75% daily driver and 25% towing. I'm not sure which gear ratio I should go with. I've talked with my dad and others I know and trust, but can't get clear direction or sound advise. So I thought I'd turn to you, The Powerstroke Nation for a non bias and expert advise. Which ratio would be the best all around the 4:11 or the 3:73?