I did exactly this, plus Larini parts are keeping up their value, you can easily resell it once you sell the car. On mine I have as well Larini non-valved boxes, sounds sweet.
how did it up end working? any problems? sound was okay?I had the larini x-pipe on my 09 and it sounded great. My 14GTS is stock now and I have been looking at the options for X-pipe. Found this one on eBay for about half the cost of larini but I am not sure of the sound. Listing isnt active anymore but they may still have some available.
upload thru youtube and post the link as i usually do! my x-pipe sounds way louder and if you check the threat i did that says ( clearing all doubts about x-pipe) you can see the videos i postedI've tried to post up some videos but they are all too large for the server.