Trepcruzin (RJ) put true duals on his and did a great job. He spent a long time making adjustments and tweaking it to get the sound he wanted. I tried running the same setup as him, but the shop wouldnt run duals on my car. So i have a 2 1/4" -> 3" Y, 3" midpipe, Magnaflow crossflow 1 in 2 out to 3" tail pipes.
yeah i wouldve said to the shop im paying for a service and i want it done this way.. im doing mine myself and a buddy of mine is a manager at a to haas and ill get the pipe the way i want it for cheap.
idk about tips yet just cuz i havent decided on where its gonna exit. if i go side exit ive gotta keep ground clearance in mind so i thought just a slant cut towards the rear of the pipe and painting it high temp black to keep them somewhat stealthy. but if i do go out the rear im going with a nice chrome 3" tip and redoing the molding in the bumper to either add another tailpipe dimple on the right or smoothing out the dimple on the left and having both tips flush under the bumper.
well im gonna do side exit but both exiting out the passenger side of the car infront of the rear tire. its just easier and i dont have to worry about the fuel lines that run on the drivers side, im gonna have the tips slant cut and i hope it kinda looks like a gt2 track car. lol i just know its loud as it is now cuz i have the x pipe and bombs installed and the pipe started at a 45 towards the passenger side...
Put duals back to the center of the car, and then have the shop make you some simple bolt on side exits... run them for a while, and then if they suck, you can un-bolt the side pipes and have them pipe it to the rear of the car.
I have a always fancied running side exhaust out right below the rear doors kinda how a viper does it. But to run it the sides, you have to run it across fuel lines. Not to mention you will probably scrub speed bumps with the pipes running out the side.