There is also a company that makes them in Canada. They were mentioned in the last issue of Overland Journal, the 4runner expedition build.
Timbren suspension enhancement, http://www.timbren.com/index.htm
I have not installed any modified bump stops yet. I plan to, as I do get a bit of inner fender rubbing on occasion with the 35s but almost never with with 33s.
Those Icon rear shocks seem to be a nice call..They are highlighted in the same article.
They look beefy and shinny..My favorite combination...