Hey mate if you already have the k-t50 you might as well use it. A t series flywheel won't fit a k. Most clutch catalogues have listing of 'some 5 speeds' with the 21 tooth plate, that is a k-t kit. I have a very similar clutch in mine to the one you have for sale which is an exedy. I don't mind it for daily driving however I know another member here who got the exact same kit and hated it, he swapped it out for a full pate HD kit.