Ha. Headers... I should have done that when I had my 2000 GTP instead of the upgraded downpipe and PLOG back then.
I don't plan to really mod the car, and headers will be a bit spendy, even the cheap ones.
Might have to call an exhaust shop and get their take on it. I mean, it shouldn't be leaking at those spots, but maybe they can just do it instead of me messing around with it and then see if they find any other problems.
I still don't think that these leaky areas are what is causing the problem though.