exhaust manifold

So i have a 2016 Malibu premier. Basically i have a stock exhaust system except for i did resonator Delete and put on some flow master super ten series mufflers it’s loud right now. I was wondering if i un hook the exhaust from the cat (requires you to un screw a few bolts) and push it off to...

Is it possible to swap a exhaust manifold/cat conv. From a 2009 malibu 2.4 with 4speed trans with an exhaust manifold and catalytic converter from a 2011 malibu 2.4 with 6 speed trans? Had to replace mine twice in less than a year and it's costing me a fortune.