I use the same one, they just came out w/a nice gray color instead of the light blue. My FX is in a 50 gallon w/wheels. The 50 gallon fits in the back of my Mazda 3 hatch but it hangs on the sides, the 45 gallon fits perfectly.
I get everything in it no problem. I put a box under the helmet w/all sorts of spare parts, white duck tape, snaps, elastic, Devcon Plastic Welder, super glue, batteries, etc. I'm not sure everything that is in it right now, I usually re-pack it the night before any event.