just got my 4" cat back for dual cat setup... i also have hotchkis subframe connectors with eibach sportline springs and a new moser 9"...... is this combo going to work or do you forsee any problems? also is there someone who makes a custom 3" y pipe that went to shorty style headers for our cars? all i can find is 2.5s, i am wanting to go with dual 3" to a 4" like the factory setup..... because i am going to have to fab the connection between the y pipe and the ls2 manifolds.....

 

nope.. No one makes a 3" Y-pipe for our cars only ones i have ever seen were custom. The bends are kinda tight down there probably why you don't see many 3" ones made. Might want to look into some custom shops in your area..

 

I am in the process of making a 3 inch y pipe and custom 4 inch exhaust with two mufflers. I hope to have it done this week. I am going to post a tread with pictures. For mufflers I am running one dynomax race 4 inch muffler and a spintech in the rear.