[dsraven]

looks good. on the vent tube, you could install an axle tube vent in the end to help keep bugs, dirt, mud etc out since it is inside the fenderwell. possibly something like a mudflap around it. on the filler tube, and this is just me being stupid, I always try to put the hose clamps on so they can be tightened or loosened etc from underneath or some other accessible way when the box is on. I am a mechanic and cant tell you how many times I wished I had the engineer with me when forced into some contorted fashion in order to do some small job like that or forced to remove a bunch of unrelated stuff in order to acess something that could be easily assembled differently to aid the repair procedure.
nice work, gonna be driving soon at this rate. keep the pics coming, always good to see forward progress.