Cut n Paste from another forum but may rovide assistance.
"Well guys after many questions and $50 poorer I finally got what I need to align the IRS on the AU. Ford put in their premium, some 1998 XR6's and special order lower spec falcon's a non adjstable bolt and washer for the upper control arms. No good if you lower the suspension.
Why $50 poorer for no reason well here is the problem ford list,s
P/N w-520214-s60 nut
P/N er-5b751-f cam washer
P/N er-5617-h bolt
As being in kit P/N ER5K500AKT which by the way is the correct part you need to align the IRS. only the bloody nut is the same.
But as i had already had fitted it they would not give me a refound even though it was listed by ford on thier parts cat wrongly . The part salesperson ( order taker ) said I should have orded the kit . I informed the F@#* idiot that his service adviser and him where f@#* wit"s and the local tyre power bloke knew more about fords than they do. His manager to calm me down gave me the 2 kits for the price of one at trade price.
I,am now a happy cappy as I,am posting this to let you know that only order the kit not the parts that are listed by ford."
AU1 XR6 VCT IRS
Never hold a Dustbuster and a cat at the same time.