Is there a difference in the stock pipes on a 2005 Electra Glide Standard from what is on a 2006 Electra Glide Classic My stock pipe are getting a little pitted and A friend of mine has a set of Stock slip on mufflers of his 2006 EG Classic. I would like to use them, but are the 2006 pipes Cat type or not. I know they will fit with no problem, but on his pipes it has the word CAT. So can I still use them or will it effect the way the bike runs. I have a Stage 1, and a cobra EF2000 fuel management system. The Harley Dealer said that it would not have any effect because the CAT was all in the header pipe and not the Mufflers. Any input would be greatly appreciated.