No eBay APP ID and/or Cert ID defined in Kunena configurationDo you have a Kawasaki shop manual?
If not here's one to check out,
www.kzrider.com/modules/ServiceManuals/K...Service%20Manual.pdf
Pages 131 through 138 have a lot of info on your carbs.
With just a set of V&H you should be fine with stock carbs and jets
If you want a little more pep go with a K&N air filter for better air flow and step up the jets 1 size bigger
You need to make sure the the air plug screws are set right, I don't think you have a Pilot jets on your year and check the colors of your plugs, (get new ones)
White is too lean and will make your engine run hotter, black is too rich and will foul your plugs, light brown is what you are looking for.