5" exhaust questions

[JFindley]

I've going to upgrade my factory straightpipe to 4 or 5" straightpipe and was wondering if the 5" sounds better and is any louder than the 4"?Or is there no difference in sound. I replied to the 5" exhaust group purchase a few days back with no response, Is that still in the works?I emailed Rip Rook and he has a 5" system at a pretty good price and I'm thinking of going to that unless you don't think I'll gain any noise or throat

Let me know what you think and you guys running 5" let me know,is it worth the extra money and hassle to install? thanks Jake