Dang wish I saw that when I had to replace the assembly in my mom's 2014 300, aluminum would be much better than plastic. Yes you should replace the sensors and try your best to go OE brand, anything else is a crapshoot.
It was quite a bit easier than I expected to replace the filter/cooler assembly but that car has a pretty big engine bay and it's RWD/AWD with plenty of space to work. I could see the SUVs or transverse-mounted FWD ones being more tricky. Stupid thing to have to fix but at least they made it reasonably serviceable. And boy those plastic intake manifolds are nice, so much lighter, heat-insulating... if someone made plastic intakes for our old carbed V8s I'd try one. I bet the plastic doesn't work well being constantly exposed to gasoline though and the internal surface is smooth which doesn't help keep the atomized fuel in suspension.
