The problem is that after the pre-cats the factory pipes are 1.61", not an easy size to replicate.
If you have a good exhaust guy he can cut off the last of the pre-cat and weld in an S shaped 2" tube and go with the previously mentioned 94007.
When I make them I use galvanized 2" J bends from summit.
Two Js = two S bends.
This would also be a good time to reinstall a resonator/glasspack.