wont sound like the real thing, the real cars make the noise because of the cylinders/valve train componets etc.  It might make it sound better, but wont give it the raspy sound.  Not worth it in my book.

I know putting a genuine 360 exhaust on one of our 360s makes it sound very close, I think the box on a Ferrari helps make there sound. The exhaust on that video is only the genuine tailpipes it may help if the full box was on there but im not sure if Lamborghini use the box to help create the sound, mine has a tubi exhaust on it and doesn’t sound that different so the box doesn’t look like it does much. I don’t think you will get the right sound what ever you do but the easiest way to get a good sound would be to put a 360 box on it, at least this way you get a super car sound.