there is a skid, protective plate under the master cyl, about 9"X8" not square and has two pieces to attach to frame and to cylinder. the one i have is a mess?? seemed to be two seperate pieces of steel sandwiched together and welded. mine is bad shape, both of them were if you look at diagram it is H. Attachment 1768 so this basically will be the before look..Attachment 1769 another look at the rusty thing Attachment 1770