We print the catalog for this company where I work. I was flipping through it yesterday and I found some real cool stuff. www.awdirect.com it is for tow trucks but they sell all kinds of good stuff and the prices seem cheap. Do a search for air horns, Aux fuel tanks(search for "fuel") etc...

 

I got one of their catalogs under my desk. Lotsa neat goodies!

 

I've been buying from them for a long time now. They are not the cheapest but the service is great. In fact, that is where I got my on board air compressor from and the LED lights for my GN trailer and, well, you know.

http://www.awdirect.com/awdirect/fin...m?itemid=15341