Hey guys, after looking at the RSB in the box for weeks, I finally install the Progress RSB today, everything went smooth it took me about 45 minutes.
I did a test drive for 5-10 minutes just to see if everything was fine. cant really tell the difference exept I had the feeling the back was tighter but that may be suggestive so let wait and see in the next few days. While I was underneath the car I think I found the way to make the dual exhaust to work.

This is not for the faint at heart because it involve cutting a part of the spare tire room, so no more spare ( or you can leave it in the trunk )and a permanent weight reduction. The relocation of the the fuel box is really not a problem it only involve the installation of new longer rubber tubing, so basically the fuel box would move to the center this way it would leave enought room to use a secon muffler well aligned with the other, I will do it as soon as the car warranty is over.

Cheers

AA