Here we have a used KAWASAKI GPZ305 Keihin Carbs. They look ok except that one of the choke flaps is bent but I guess could be striaghtened and the diaphrams look a bit baggy. They've been on the shelf for the 25 years, so will need cleaning out properly before fitting. They are from an early GPZ305 and are 33mm. The bowls don't look the same to me but seam to fit.
They could be repaired or just used for loads of good spares ie bodies, slide etc... This item is in the category "Vehicle Parts & Accessories\Motorcycle Parts\Air Intake & Fuel Delivery\Carburettors & Parts".The seller is "mdlspares" and is located in this country: GB. This item can be shipped worldwide.