Hey Vin an Jamo, yes I know the differences between the GSR turbo and evo one, think we all do by now- true? But now I have an RVR I have since found the 2 td04's are slightly different and while I can only speak for auto HSG I'd think SSG would be the same but hopefully someone who's been there can chime in, anyway the 2 things are
Comp cover- has a hose and clamp style outlet instead of the usual j pipe and gasket
Exhaust housing- same dump pipe flange as 16g
unsure on exact dimensions all round but I'll measure it up soon an put some pics and better details of what part is compatible to what,