4.0 Exhaust Options

So my exhaust has a leak, it has a leak at both flanges from primary manifold cat to y pipe.
The flanges are rotted out. What the best way to go about this most cost effective.
I don't want to spend 600 on a walker exhaust, only for it to rot out a year later.
Any ideas. any good y pipe straight pipe deals or used options.

 

The Y-pipes should not rot out in a year or two
If you want stainless the double and even triple

 

Buy another oem from someone in the forum that has it in its garage wasting valuable room. Cheers!