Get headers...get a tune. Clear enough?
I can try and draw you a picture on Microsoft paint if you'd like but I am pretty sure you've said your going to drop to a 3.4" about a doze n times and MANY people have told you what you need to do and you don't seen to acknowledge it. So go ahead and cut all your exhaust off and put in a 160* T-Stat because...after all...that should be enough.