As a Christmas gift to myself, I picked up a Squier Classic Vibe Duo Sonic. The previous owner did quite a job at relicing it. He refinished it blue, added a stripe from a Mustang, scratched up the pickguard, and burnt the headstock with a cigarette.

I wanna swap out the neck, but I'm unsure what would be appropriate (Mustang, vintage duo-sonic, warmoth blank?). Here are the specs.
Fingerboard Maple, 9.5" Radius (241mm)
21 Frets
Any help would be much appreciated