You mean buy new 2.5 exhaust pipe, or get one off of a junkyard car? Can I find that big a pipe on a car?I suppose the air is coming from an intercoler? Get 2.5" exhaust pipe. Go to the J-yard and pop the hoods on any 87-93ish 3.0 V6 equipped Chrysler. Pull the hose that goes from the air filter box to the throttle body. In 87-88 they're 2.5" all the way, 89+ neck down smaller RIGHT AT THE TB!. Use the exhaust for straight sections and the hose for any bends you have to make. It's cheap and with some armorall looks good. I use the 89+ hose to get onto my turbo and my stock TB. Now, the hoses on the hot side last about a year or two under every day use. But they'll get you so you know what bends to buy in silicone. Nvr2old here sells custom silicone hoses for a decent price. I've bought 2 from him for my hot side. They're very nice.