Great big internet at our fingertips, and nobody can find a source for polarizing film? Maybe we have the wrong name for the stuff. I thought someone once told me they usually have some at photography stores. Mmm.. As for the LED's, someone like Cole should buy a batch of them, and then re-sell them to us in pairs for the mods.
Or better yet, someone should just pre-mod DD5's, and sell them that way..