Looks like what the last guy did was cut the stock Y-pipe before the Y and have a dual system welded in, but through a dual-in dual-out muffler. So it's not quite a "true dual" set up because there's only one muffler. However he did eliminate that stupid pinch point in the Y, so you've got a decent system going there.
System looks in decent shape, but I couldn't really see the manifold-to-Y pipe bolts. If you're doing the job, pull the truck into the shop Friday night and as soon as it's cool, soak the **** out of the man-to-Y and man-to-head bolts with a good penetrant. With mine the man-to-Y bolts were almost non-existent from rust and I just broke 4 with the impact and cut the other 2. It's not a big deal if you destroy them, just have new ones on hand. Not sure if BBK sends new ones or not.
Have fun bro!
