Ok so i have a 2014 wrx. I was going to put on a downpipe and an accessport among other things. I was kinda iffy because every time i drive it it sounds like it has a rod knocking???. Not too loud but i hear it. It sounds like that and like an exhaust leak. Improbably being paranoid but every time i drive it my braing goes crazy! Anyways, i wanted to just open the bottom up and replace the bearings but thought why not just pull the motor and replace parts while im at it. Forged pistons and rods, bearings, springs and gaskets all around. Clutch while im at it. But i was wondering what else would i need to do? Basically a rebuild but dont know what else should i replace. Also, when i pull the motor what all would i have to get done to the block andheads? What machining would i have to get done to it? Thank you for any help!