What about magnaflow cats by car sound? Would they fit on our sedan i know they make a uni fit. They are also much cheaper than random tech. I have the warpspeed y pipe with the magnaflow cat, muffler, and 2.5 in pipes on my maxima and the whole set up cost $590. Maybe the guy at warpspeed could start making G setups? He also has a 3in set up for turbos which i think was like 695.

 

Car Sound cats are some of the best on the market. They are cheaper than the Randoms, but flow just as well. I don't see why you can't use them and have a muffler shop fabricate you a y-pipe.

2003 G35 Sedan 6MT
14.35 @ 98.62