The intake sounds so much better IMO. The second engine i put in my Challenger came out of a 68 New Yorker with 58,000 original miles, and ran perfect. When i went to go get it, i put in a battery, took off the air cleaner pored some gas in, and almost died when i heard it. It mad no exhaust noise at all, but sounded like it could suck a small child in it with ease.