Who makes a full dual exhaust for the Gen2?

[Telboy2000]

on a side note...has anyone tried these headers / downpipes...I already have Yoshi end cans and I'm happy with them but the stock headers and cat i'd like rid of for looks if nothing else.
GSX1300R GSX 1300 R HAYABUSA 2008 - 2015 4-2 downpipes collector De cat

 

[Statman]

I have two brothers slip ons already and can get a set of V&H dual pipes already wrapped for cheap [$300]
Is it worth it ? Would it need retuning?
Also can get a V&H fuel controller with it new in box, although there are prob better options