Interchangable Parts Thread!

I'd like to start a listing.. or thread... which details parts that are interchangable between mazda's makes and models... I'm new to mazda's, however I know that the Honda DX, LX, HX, EX models all have the same bumpers.. lights.. bulbs.. and such.... And I think knowing which parts are exchangable between mazda models would help some of us out... For example... I have a Speed6.... very few "mods" out for this car... but if they have the mod for a standard 6.... and it's the same part... as the Speed6 isn't all that different from standard 6's... Then I can just order the 6 parts.

So... Post away!

Best way to even tackle this is having pdf. side by side. mazda 6 is built in u.s.a. and speed 6 is built in japan.