I've got a bone stock marauder and i'm looking to add a conservative rumble to it. Nothing loud or obnoxious. Needs to be louder than stock for sure and I would preferably like it to be heard when I step on the gas. I'm only going to install mufflers and probably nothing else. Would anyone recommend flow master 40, delta 40, or delta 50? Also what is the inlet and outlet size needed? My last marauder came with exhaust already done, never needed to touch it so exhaust work on these cars is kind of foreign to me..