Need some help please, and remember to speak non technical I like to ride but not wrench so it’s easy to confuse me. My bike stock 2011 FLHTK (Electra Glide Ultra Limited), I love everything about it with the exception of the sound and the heat. I found an individual selling a set of Screamin' Eagle® Street Performance Slip-On Mufflers – Chrome for a $125 dollars not a scratch, dent or ding on them that came off of a 09 Road Glide the part number he has is 80505-09. I found a really obscure post that said this model number was replaced with 80721-09 which is the correct model for my bike so they should fit. Hoping one of you guru’s can validate this, and will these slip-ons give me a little more sound…don’t want obnoxious, but want people to stop telling me the bike doesn’t sound like a Harley (if you know what I mean). Best part is, he will also install them for me… For the heat I'll be looking to put a TFI on nothing specific in mind, I've read all the posts on everyone's opinions it will be whatever I can find at a very cheap price...Since I'll be doing this, I guess it only makes sense to go ahead and add a better air filter...I like to look of the stock cover, and especially like the fact that it protects against the rain so want to keep it stock...But can't figure out which filter that would be...Any suggestions here would be appreciated.