997 interchangeable parts?

[bobswei]

I just picked up a 2012 997. (not delivered yet). I need a front fender, hood and bumper cover. Will different year parts fit? Like a 2013 bumper? Or 2012 Turbo bumpers? They look like they would but 2013 is a different model. And, different year airbags, what will fit? Fenders appear the same also, so what years will work. The 2012 997 parts seem scarce but other years seem plentiful. Thanks for any input.