Hey Seamusep3, If you're looking to lower your '12 check out this post (sorry to throw to an outside site)
OP posted a step by step to his lowering and gives part numbers.
If you plan on running stock legacy suspension you can switch out the upper arms to get rid of in the rear. I went a little lower on mine so the legacy arms weren't as worthwhile as I would have liked them to be. Hope this helps.