The banana pipe is louder, but not ear hurting loud. It's also higher pitched.
The air filter was ordered from Ebay - it's a mesh filter, and a 60mm one (Oversized)
You will need that black piece of plastic from the intake box, you will have to cut out all the material from in it so the only thing is the outside circle part and where the screw goes in to connect to the carb.
You will need to put the air filter on that, if you don't have a longer part comming out.