I'm selling a slightly used SFMU with all the disks and the hard spring. I never used it, but I bought it used. It came off of a mustang. I bought the hard spring from vortech, but I never put it on because I need to sell it to pay some bills. I'm asking $210 plus shipping. Just email me at sam_brar@hotmail.com if you are interested. I'll try to check this site but I don't have too much time, so the best way to get a hold of me is to just email me.