Use one of the four longer bolts from the vib. dampeners for that last, or "third" bolt on the rear flange. I know the 2001 model has 'em, not sure about others...

You *can* install these yourself... Just balance the bar on your legs and lift into place - use your legs to keep it balanced, at least over one hole so you can get a bolt in. Once you have one bolt in, you can easily add the others.

As for customer service; I don't think you can beat ShrockWorks, IMO.