Hi all, need some opinions. My 82 6.2 na has more power than any other 6.2 I've ever been in (been in at least a dozen). But, the simple fact is, it still ain't enough. I'm pretty sure for it to run as good as it does, the injection pump has been tweaked, but I've never investigated it. I've got 32 in tires on now with 3.73 gears and 4 spd. I want to go to 33 in tires to bring my rpms down and increase mileage. At the same time, I want to put on a bigger exhaust system, as mine is the stock dual (soda drink straw size in my opinion). I have about half of what I need to install a turbo, but am not contemplating that for a while. My question is: what do you think (all things considered) would be the best pipe size and muffler to put on this thing? I would like for it to not be too loud, I can deal with some noise if it will adequately deal with the constipation I'm sure my engine is experiencing with this pathetic exhaust. Thanks guys.