Update: IT'S ALIVE! With all the newfound spare time that I have (in between homeschooling the kids, cooking three meals a day, and occasionally trying to do some actual work at my actual job), I finally managed to install the bridge, tuners, pickups, wiring harness, and Bigsby, and get it hooked up and ready to play. It sounds GORGEOUS. That's a TVJ Classic at the neck, and an HS Filtertron at the bridge. Both are amazing pickups. There are still a few things to be done. I sanded the headstock down to bare wood and re-lacquered it months ago; I still need to install the Gretsch logo decal and hit it with a few more clear coats, but I'll have to wait for warm and dry weather. I also need to order the custom pickguard and fix my wonky soldering job at the tone pot. But it's playable now, and let me tell you, I am in love with this guitar. To recap, here's the complete list of mods: Routed larger pickup cavities to accommodate Filtertrons; Spray-painted clear pickup bezels; Added blue sparkle drum wrap; Added new binding; Sanded and refinished headstock; Replaced G-cutout tailpiece with V-cut Bigsby; Replaced mini-Gretschbuckers with TV Classic and HS Filtertron; Drilled extra holes to convert two-control setup to classic four-control setup; and Replaced wiring harness. Whew! It involved a lot of work, a lot of learning, and more mistakes than I'd like to admit—but I think it turned out pretty well for my first rebuild. I'm delighted.