http://www.guitarpartsresource.com/e...erswitches.htm 
I haven't found a tech drawing of these yet--anyone here got one, with the measurements? The main thing I need to know is the depth of the rotary portion that would be underneath the pickguard. The routing template for the pg would also be helpful. Thx!
Edit: Never mind, found the info at Stew-Mac. 1 and 3/8" body cavity depth needed.