I didn't want the Flowmaster to sound awkward and personally I think these mufflers helped me with that. Despite the fact that I dropped them in front of the axle, I have a very small rumble, barely noticeable. Sound-wise, they're aggressive when you step on them, but quiet enough to have a conversation while cruising the freeway. For me this is exactly what I wanted, so I couldn't be happier. K5, 350 with manifolds, otherwise standard engine.