Jeep 4.0 in 69 Barracuda

Yeah, that's an option...I think Flowmaster and others make dual in dual out inline mufflers though...Walker comes to mind. I dunno man, it's really whatever floats your boat and blows your hair back...nothing wrong with true duals, but if you're gonna go true and performance, what's stopping you from dual 2"? Lots of people go duals 2 1/4" on a 273, and that's only 4.5 liters...:)