hello, my dad recently purchased a 2016 street glide last November, well he is wanting to put on a full exhaust system. this is his third harley so he knows what he is doing, our problem is we cant seem to find any dual full exhaust system Vance and hines pipes, he wants the dual exhaust in the rear look, one under each bag. we have already gotten the FP3 and the air cleaner, so all were waiting on is the pipes. anyone know where we can find the part numbers for what he wants?