Warmoth has been around for years, and enjoy a reputation for top notch products. I've never bought any of their stuff, but I've seen it up close and picked up a couple that have been assembled by others.
You can also look at AllParts, Musikraft, USA Custom Guitars, Mighty Mite, and others... Just do a search for "Strat Bodies"...
Guitars:
Fender 2006 MIM Fender Stratocaster HSS in 3TS
Ibanez RG 570 with a bridge Invader
ESP M II Deluxe with a Tune-o-Matic bridge
Eleanor, the magical, mystical Road Worn wonder Tele
Blackstar HT Club 40