I have a Gretsch G2220 Junior Jet bass that I'm considering a pickup mod on. I want something more raw-sounding and thinking about a Rickenbacker Bass Toaster pickup in the neck position. I haven't had much luck finding complete accurate dimensions online. A couple of considerations...1) Whether the Toaster will adequately fill the rout left when I remove the Electromatic Single Coil pickup, .....And 2) Height - Years ago I built a Telecaster guitar that I installed Toaster pickups in and mounting height was problematic (pickup mounted to the underside of the pickguard was too far from the Strings, but mounted top-side above the pickguard was too close to the strings) I anticipate needing some kind of adaptor plate to deal with any surface size difference on my Gretsch bass, unless the Toaster happens to exactly fit the Electromatic single coil pickup's mounting screw points exactly, so I'm guessing the same situation as I ran into with the guitar pickguard might also apply here. I searched Talk Bass and found mention of a Precision bass with a neck Bass Toaster pickup in Stu Cook's CCR bass, but couldn't find any details that referred to pickup height relative to the strings. Anybody have any advice?