Hi, don't know of a chart but the brace should have a code stamped on the underside and reading between the lines this can tell you something.
eg 4l0/4L1 brace is 54G ie the clamps are 54mm diameter and the G must relate to the width. 58G is a YPVS brace which is 58mm and is the same width as a 4L0/4L1 brace, (as the forks are the same distance apart).
yeah i know what your saying mate i just wondered if there was more infomation as they all fit more than one bike but its findng out which ones fit what isnt it thanks though apreciate it