I think comparing dimensions is a good start. My approach would be to measure the bushing removed and size the new one to as close as you can with emory cloth.. The trick is not over doing the emory cloth. Pecise concentrisity isn't real crucial. . I made the mistake of buying one of these bushings from CL and it arrived with a dull "leathery" matte finish.. I asked CL what gives and they told me some are machine turned shiney and some like mine. I fouled up and buffed it a tad too much and it just slipped on with hand pressure and spun , a nice definition of a "clearance " fit and back to the drawing board. I think the key is to get to a "transitional" fit rather than an "interference" fit..or somewhere in between.. (there are 3 categories of fit--clearance ,transitional, and interference) There is a slew of You -tubes on the science and methodology of ISO and ANI tolerances for "fit" nomenclature of a shaft in a hole just like everything a machinist perform. I think the tolerances ( there is a range) we are seeing in the parts are somewhere at the top of the interference fitting tightness range when in fact it should be at the bottom of it and perhaps at the top of the transition fitting range.