Why do you have your heart set on a Y-Pipe? A race shop I went to who planned out my exhuast said to headers stright back, SINCE there was no room for a X Pipe (Cross Over Pipe) then they recommended me to get this muffler made by DynoMax called the Crossover X. Has an X Pipe built into it. Advised me to get it on my own b/c it would be too much money thru them. I scored the Muffler for &90 shpped ot my front door, If I re-call correctly.
Why an X-Pipe, cross over the gasses so there is equal pressure in the system hence more air flowing out of your exhaust means better HP and MPG.
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As far as brands, our options are limited...
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They are all good IMO, Pacesetter is the Cheapest, few people say the welds don't hold up, which to me is OK, b/c if I were to get them I would have them re-weld aka re-enforce to elevate the problem. Never got around to it b/c I scored a set of Hookers for $215 shipped to my front door.