I was looking at magnaflow's picture of their duals (http://www.magnaflow.com/02product/parts/16605_lg.jpg), and is it me or does it look like GT axlebacks won't go on if I wanted to install them in the future? For example the JBA has the dual axlebacks (like gt) in the dual kit, but just with the mid-pipes and the y-pipe. So I'm confused if I got Magnaflow it would limit a future axle-back exhaust with higher performance mufflers (MRT-Turbine) I could get. Thanx