It is, the stock setup is headers into a Y, 3" single to the muffler inlet, dual 2 1/4" outlets. I put a new Y pipe on mine with a Mag single in/dual out muffler......Built my own catback for 250 bucks! It works, true duals would require tuning to get the most out of it and there really isn't room to do it right.
My new Y-pipe setup
My thread with pics!