2057 is a top end pipe, virtually no bottom end, IMO. 2058 is the best of bothe worlds, great bottom with very little sacrifice in top end.. 2013 gives more bottom end, with slightly less top end then the 2058

Depending on what you like I suggest the 2058 for a good all around, or the 2013 if you like a bit more bottom end.. I however would not recommend the 2057 for anything but full on top speed/bashing, unless you have an engine that makes alot of bottom end to begin with..