I have intrax on my 85, right around a 2" drop. I don't think they're available any longer, but shox.com has a set of B&G's for a little over $200. I think kilen makes a set as well. If you're just replacing springs, there's really not a huge difference; if I had to do it again, I'd try and find a set of coilovers and play around with specific spring rates. You'll want a stiffer shock once lower, unless you like bouncing around.
