Exhaust, Window leak, Tire Balancing

[00stang3.8]

OK first off, Im thinking about redoing the entire exhaust from the headers. What kind of benefits will I see and also will I be able to get it to sound better? I shop told my friend they could do it for 650, I think for flowmasters. Is that a decent price?? My car is a convertible and when it rains water gets into were the top is stored. Is this common? Is the water getting into the body or is there some type of drainage system? I also have 2 sets of rims, one for the summer and one for the winter. They both have their own set of tires already mounted and balanced. I heard that you have to balance the tires again once you put them back even if they havent been taken off the rim. Is this true? it doesnt make sense to me. Thanks in advance for any advice.

[STEVE]

Don't do flowmasters their quality is horrible. 650 for piping from the headers back with magnaflows is an alright price out here. But you can proably get it done for 500 if you shop around.
You do not have to rebalance tires if they have been stored.
About the leak, try to isolate it and see if you can se a work weather stripping and such.

[00stang3.8]

Flow masters aren't any good?? I have had trouble finding headers for the V6. Are there companies who make a complete bolt on system from the headers back??

[DarkShadow]

Headers are really a waste of money on our cars. They might get you about 2-3 hp, but yeah, dont get flowbastards, go with magnaflows or some other type of flow through muffler.

[bbunt302]

Get the Flowmasters. They are actually pretty damn good as far as quality goes. I had their American Thunder kit on my old '91 GT. I also used those mufflers with a set of their polished stainless steel pipes on my '90 LX. There was absolutely nothing wrong with the quality, in fact, I was actually impressed with the stainless pipes. And they still look good today.

Flow-through mufflers make a little more power (and when I say little, I mean little... as in 1-2), but don't purchase a muffler based on how much power it will "make". Get the mufflers you think sound best.

In my opinion, Flowmasters are the best sound mufflers you can buy. To me, straight-through mufflers sound like ass. They are bad about popping and the sound reminds me more of Civics than a good ol' hunk of American iron.

[STEVE]

I love the sound of my magnaflows