Thanks all. FYI I emailed them and they do ship to Singapore. But its expensive, I believe it gonna cost me close to 300 sing$ inclusive of shipping. I'm looking at 2 1/16" 6 mounting hole vintage trem bridge complete assembly.
Callaham, Glendale, then those 70's Fender stuff, really expensive.
From the reviews at TGP, the differences aren't that much, too.
It mostly depends on the material (steel vs brass etc.) rather than branding (Callaham, Glendale vs Allparts). Of course, the quality is definitely better than off-the-shelf parts.
But maybe you wanna reconsider cause it's more economical to get a readily available one, plus saves you the waiting time.
Just my two cents.