are those spring spacers used to get extra lift? And if so are they used with the stock, 912's or either? What I'm seeing is I can get from 0" to 5&1/4" of lift... Am I getting that correct?

Oh and thanx TR. This is a life saver. I had been browsing this site and the web for all this info for a while and now its all in one place. U r awesome!