stick w/ cats until its heavily modded? i hope you are referring w/ the bassani 5 piece b/c why would i waste 400 bucks on a catted midpipe just to replace it w/ an o/r after a few more mods?
I have the SLP short o/r x-pipe and I love it they say the difference between cats and no cats is no cats is a bit more raspy and the hp gains in very small between the two. I love mine though.
hmm...i didnt know slp made an interchangable x as well? would a magnaflow/bassani/slp o/r x all sound the same on some magnapacks? if so the slp's are even cheaper than the magnaflows & bassani