Re: Twin muffler, same as Hemi's?
I cannot say if the pipes are the same, however and exhaust shop should be able to make up a system to your requirements. I am not talking about a prefabed system, but one made specifically to your requirements. This is a common way to get exhausts made here in Oz, as OEM systems are usually far more costly than aftermarket.
MY2011 CRD Overland in Bright Silver
I Bought an SRT - Bright Silver, HK + Roof