Sometimes a stock fan can be used as a low dollar solution, and to make it a pusher, you reverse the polarity of the wires, and make sure the mounts are not grounded..............unless you NEED a thin fan.....then you HAVE to buy an el expenso fan.-Bob

I use aluminum sheet metal to make a shroud/duct, and I would duct it straight to the car front for maximum air flowing through the radiator. For an intercooler, I would duct it tightly to the car front, so that no air escapes, and maybe run the duct down lower with a scoop/spoiler to grab more air than what comes through the stock grill opening.-Bob