Hey guys, I've been looking real hard into getting a MAC H-Pipe to go with my 2 chamber flowmasters. How will it sound inside the car with the windows up on the freeway? this is my main concern: CA emissions testing. If I can't pass the visual inspection with a catted H, and will have to bolt the stock H pipe back on anyway to pass visual then wouldn't it be wiser to go with the offroad H? Or would high flow cats be a wiser choice? The offroad pipe is cheaper of course and I want a meaner sound with some more power to go with it.