Hey Jim, I think they must have been reffering to the spacers.
Are you aware that the A-Arms need to be altered so that the wheel sits centrally within the arch. Have a look and you should notice that the wheel is too forward (I think). By altering this arm, brings the whole hub back an inch or what ever, this then should give you the clearence you need. AshleY recomends doing the drive shafts at the same time. You will need to post the 2 sets to Ashley for him to do.
Hope this helps