Any Need To Worry About This Size Fuel/Tool Box In Bed?

Bob,
I have an RDS 45 gallon tank in our truck, I don't think you'll have an issue at all. We have the puck system with a B & W hitch and a small tool box behind the tank. My only regret is I wish I would've bought the combo you're thinking of purchasing. Our tank came out of our "old" truck and having a higher capacity tank would be even more useful.

I LOVE having the extra fuel capacity! Good luck on your decision.

Dan