Hi I have a 1991 ford f250 with a 7.3 idi and the old banks sidewinder turbo kit with the beg square piece of metal on top. I was just wondering, I looked under the hood of my friends truck, literally the same exact setup , and he had a cold air intake to his big metal box! Mine is just an open hole. Now I'm just wondering if anyone knows where I could purchase that air intake because I think banks discontinued it, and I mean banks products are pretty damn pricey, so if anyone understands my stupid language I'd really appreciate the help!

 

You can put a request in here for the vendors to see what they have for an air intake setup for your truck. And your right, banks stuff is pricey.
You can get a good setup for less than buying banks.