If you have the non-load leveling springs, installing Eibachs is a breeze. They also include some new bumpstops in the kit for the base shocks.
I've still got my FE3 nivomats in the garage. When I have some time, I will try to see if we can do the same WildWhl spacer mod, from the inside. the difference is that the spacer that's removed from the V shocks is external to the plastic tube, it's integral to the tube and top pillow mount on the FE3's. The tube/top pillow come off as a unit, but I'll see if there's an easy way to pull the bump stop, and remove the spacer (if it is separate from the bump stop).
I spent last weekend removing my FE4's, pulling them back apart, so I can photo document the parts and process. Pietro may offer his services to cast some polyurathane spacers for this, since he has access to the tooling to do so. It would save forum members a lot of trial and error, trying to do it themselves.
I also spent part of last week photo documenting a factory-like XM install, including fabricating and installing your own harness (rather than spending $300 for a kit). Unfortunately, my Nav doesn't allow XM as an option (after two hours at the dealer trying to activate the option with the Tech-2). It may be time to upgrade to a DVD nav, since I also have a jammed 6 disk changer.
Believe it or not, I actually find time to work too.