Thanks for everyone's responses... I have decided to still go with the REMUS RACE and Eisenmann Connecting Pipes. Due to the German TUV, this is easiest. And also not bad prices for quality products! That way in case I need to re-install OEM Exhaust/Muffler System to pass inspection, it will be easy to do so. No cutting involved! Then can pass inspection, then re-install REMUS RACE and Eisenmann connecting pipes...