radiator location
 

has anyone put a radiator in the bed of a pickup? if so how much of a pain was it??

Been done, but problematic
 

Easy to mount but hard to route the lines so they do not have air trapped in the system or create air pockets when running. If you do this, the cap still has to be up front with the engine so that you don't blow water out the cap vent under acceleration from the water pressure in drag racing applications. Not the best way to go, that is for sure.
Bruce