ok, on my 99, there is a downpipe (no cat) that bolts onto the exhaust manifold,
then bolts onto a pipe that has a cat & resonator.
thought yours might be like mine.

agree with you to keep as a set.
but let me know if you decide to breakup the set.

that is the down pipe, acctually. It goes from the turbo on down, the cat is in it. Worth more as a downpipe than just for a cat, and trying to keep it all as one set.