Since the 4G63T runs extremely hot, I decided to fit a huge-ass cooler for when the car goes to its normal operating temps: Setrab's 7-1/2" x 16" 25-row. I use AN-12 fittings and braided lines that run to Speedflow push-on fittings straight to the block, where the oil pump is located. On Hyundai, this area is sealed off with allen key bolts, so you need to possibly tap it for using the much bigger line. I mounted my oil cooler between the radiator and intercooler, which is possible because I have removed the AC condesner. I made up the brackets to hold the cooler where it is, and on the older Elantras and Evo 4-6, it will just fit into the space between the upper and lower limit of the front mounting panel. You would simply need to use rivet nuts to create the hardpoints. It looks pretty stock.