i use something along these lines.
http://www.acehardware.com/product/...3&cp=2568443.2568450.2628082.1259491i got the idea from sweet. im able to carry everything i need to work on the truck for simple things. i also carry a spare fuel filter,rotor,points and condenser in there. if i need something bigger i need a hook anyway. having a firebolt with top side compartments and my big tote box on my 40 it makes stashing it easier than in a rugular pick up.