I know this thread is a bit old, but it inspired me to build my own ultimate field box and now it's nearing completion. I purchased the Wal-Mart/Stanley brand rolling toolbox on sale for $19.95. The construction was pretty straight forward except for the custom made PVC "Y" connectors. Turns out the they don't make Y's that small so I had to modify (that's my name ) two 90 degree elbows and secure them to with thick CA and #8 screws.

I'm building a Super Skybolt with smoke, so I needed a field box to pump/carry smoke oil and glow fuel as well. This was solved using an OR switch from Radio Shack to toggle between the smoke and glow pumps. The fuel jugs are the same 64oz Rubbermaid juice containers that everyone else is using in this post: one is for smoke, one is for 2 stroke fuel, and the last is for reserve 2-stroke/4 stroke fuel. All that remains is to run the plumbing from the fuel jugs to the pumps and make a lid for the battery conpartment.

Thanks for the inspiration!

Mods

And now the pics: