Difference between going with mufflers instead of catback on GT

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weight savings, a little more power, slightly different tone, those are all different between mufflers only and the full cat-back.

The stock cat-back really does weigh a lot, the SLP loudmouth is probably 15lbs lighter by my guess. Plus the tips look amazing

How much does it cost to get them installed? I know you can get a catback for less than $400 and you can install it yourself.

Evenflow said:

"If you'r going to get just the mufflers alone, buy them in the 2 1/2" diameter and have reducers welded on at either end. That way, later on down the road, if you decide to step up to a full cat back, you don't need to buy new mufflers again."

Well, I was planning on just welding in the mufflers to the stock piping. So instead of welding the muffs into the stock piping I should get the reducers welded into both the stock pipe and the new muffler?

Also, how much weight would be dropped from stock mufflers, to the Super 40's.
I will probably be getting either a prochamber, or mustangtuning.com O/R X pipe, would this be a problem with the reducers/stock piping/mufflers?

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Just get the weld ins - aint nothing wrong with that. Getting 2.5 rather than 2.25 because "if you decide to step up to a full cat back, you don't need to buy new mufflers again" makes little sense because every catback system I know of comes with mufflers!
I've got both weld ins and ful catback in the garage...the catback is a cleaner sound, the weld ins are a bit raspier. Both have catted H pipes. My 02 is 2.5" all the way, the wife's 01 is only 2.25" from the 40's on back.
Still, I'd get the 2.5" muffs...easier to sell down the road. The reducers are attached to the muffs and the flow tubes on the front side and then to the muffs and tailpipes on the back side...and decent muffler shop can handle this work in an hour or so.

My Borlas weighed 1/3 of what my stock mufflers did.

I know that Flows and Magnaflows weigh alot more than the Borlas.

Evenflow said:

So down the road if I do decide for a cat-back can I just get everything BUT the mufflers?

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I've never seen a catback without mufflers...