This one is one that I'm currently eyeballing. lol. it's the only one that i've found so far that i'm interested in enough to purchase. If i'm not mistaken, a longer resonator produces a deeper sound. Now I mean, you're not going to sound like a V8, but it'll still sound nice. just make sure that whoever's doing the welding, knows what the hell they are doing. Even if it was my dad doing it, I'd tear into him if he did a half ass job.