Alrighty... here's what I'm dealing with...

1998 Camaro, RS v6 3.8...

I've had to change out the MAS, ignition coils, plugs, wires, and I'm getting a missfire still

the error code I'm recieving is: P0175, system too rich, bank 2 (right side)

what is happening is that there are times when the check engine light comes on and goes off again... the engine will run smooth some days and then fairly rough (miss fires like crazy), noticing that weather has an effect at times. I've got an idea that it's the O2 sensors on the exhaust manifold that are going out (pre and after cc). I have replaced those roughly 2 years ago or more. Does anyone here have an idea as to what it may be?

 

You may want to try the O2 sensors again. The one before the cat controls the mixture, the one after verifies that the exhaust is clean. You may want to move them to the left side & see if the trouble changes to the left side.
It could also be an ignition problem, if a cylider does not fire it will send a slug of unburned fuel into the exhaust making the mixture look rich. The O2 sensor sees the rich mixture and tells the computer to lean out the injectors, making the whole thing worse. It could also be a bad injector on that bank that is dumping extra fuel. You mentioned having changed the ignition coils, did you also change the ignition module driving the coils? They have a habit of breaking down and causing all sorts of wierd misses and crossfires,