Got these 14mm IRS bolts from WS6JJP(John). I became sick of the clunking in the rear and decided to give the bolts a try. Compare the stock 12mm to the 14mm that should have been installed from Ford [/IMG] Place jack stand under car to support and gently support the IRS with jack [/IMG] Bolt comes out so easy as if doesn't even belong there [/IMG] Finally done and it took about 1.5hrs total including taking pics and a beer or two. Next time it would take half the time. [/IMG] Much less clunking than before but not entirely gone. It was worth it to do for the negligible cost IMO. Probably need all bushings replaced with delrin and it will be near perfect.