I have a 2000 Banshee, I added a pic in the image forum specially for you
FMF Fatties / K&N in the box, no lid / V-Force II reeds / Pro Design Coolhead 20cc / PD stator plate at +4 / Billet water pump impeller / +2 A-arms and some other secrets...
I bought the pipes from Alba , (<==Click) a few years ago, can't remember the price or the shipping, but it was much cheaper than local suppliers.
You can ask around at quadtorque.co.za, they have a for sale section, I'm sure you'll get sorted there.