aftermarket oil cooler mounting

[havik180]

I am curious where oil coolers (w/elec. fans) can be mounted safely on a super's chassis while still being beneficial to the cooling process ?! I've noticed a lot have been mounted on the under side of the parcel tray , are there any clearence issues ? and also is there some kinda bracket to leave a slight gap between the body and the cooler (to let air flow between cooler and body) ?