[jeffspower]

Thanks for the input everyone. My truck hasn't hit the road yet (except for a run up the road last fall) so I've been running around the yard on a gas can until I decide what I want to do. If I go rear tank, I might just put the filler in a recessed "bucket" inside the boxside. I'm still considering a tank under a crossover toolbox also. But the rear tank kit at $150 seems to be the no brainer. I'm going to be broke awhile, so I have plenty of time to make up my mind