I have two Z1 clutches for sale. If you are doing a Z1 swap these are good clutches to start with. One was just rebuilt . It has a 911 billet clutch cover and new Heelclicker weights. It has 25 miles on it. $450 . The other one has DDP weights and a tan D & D spring. This clutch works very well. $300. I can txt pics if needed.