[Ed Snyder]

Barry -- the tag on the Watson says it's a model 2021. Does that tell you what the ratio is?

I took a couple of photos of it while I was in Wichita. You can see some angle brackets bolted to the frame rails. Looks like some smaller angles on top of them supporting the box.

You can also see some of the "plumbing" Dad ran for filling the 20 gallon saddle tank he installed on the right side of the truck to match the stock tank on the left. Both tanks fill from the left side. Dad had to retrofit a check valve in that crossover hose after experiencing fuel sloshing out the filler neck while driving around a sweeping right hand curve. The fuel in the right side tank was running back into the left tank. There's a selector valve so you can draw fuel from either tank and a toggle switch so you can see the level of the float in either tank too.