I doubt you will find much in the way of direct bolt in intercooler kits, that have an appreciable improvment over stock, that do not require some modification / relocation of structure or components.
http://store.driftmotion.com/static/...rcoolerkit.php
The above link will take you to a kit which is one you may want to consider. The oil cooler, coolant expansion tank and horns need relocation.