It's easy! First get a torque tube or gut your stock one-theres plenty of tutorials on how to do this on the forum. I personally looked around and found a used cool hose for pretty cheap so I'm using that. Then you're going to need a 2-3 inch long 4" OD piece of pipe. Many people use pvc but I like aluminum because it's thinner so it will obstruct less. Then you need to select your filter that has a 4" ID and clamp it on. Most people figure out a way to support the filter so it doesn't just lay on its side. This can be done with a simple bracket with aluminum picked up from homedepot-just bend it to whatever shape you need and drill a couple of holes in it to mount it up inside the engine bay. Some people just zip tie it off instead. There ya go!
And btw-search man just about everything has been answered before and welcome to the forum!
And btw-search man just about everything has been answered before and welcome to the forum!