dunno where in WA you are, but John and the crew at Auburn Offroad and Car Repair are the best evarrrrrr.
Welcome to the shop...
seriously, i can't say enough good things about these guys, and boy does John know his Jeeps!!
another great place for getting a lift installed is Olympic 4x4 in Snohomish, Wa.
Olympic 4x4 Supply | For all your Jeep, truck and offroad needs
i believe they do only OME lifts, and it takes them less than a day to install (at least, that's what they told me when i inquired about my YJ).
Olympic is also a great place to go for used parts.