The short answer is yes. One and done!
But you have to remember like anything mechanical it has a life span and that too will eventually wear out. but we are talking many years and lots of mileage
IMO do what I did buy the car and don't worry about it, if and when it fails replace it. Or if your that paranoid and want to spend the $$ instal the parts once you buy the Z
Also go drive a used sport MT you will not be disappointed I promise you!