Ok, a little help here, as google was only semi helpful.
1.) If I wanted to buy one in the States, where's a good place to get one?
2.) What is the typical nut size? R2/41mm seems to be th eone popping up, is this the only option?
3.) Are the trem studs the same insert size as an OFR stud, or do they need to be drilled larger or smaller?
4.) Is it possible to buy just the arm/arm holder to retrofit to an existing OFR, and if so where?
1.) no idea
2.) they do a 43mm nut too, but distributors here seem to always order the 41mm option
3.) no, they're larger, the body inserts are the same as Ibanez Edge - 11.3mm. The posts are the same too, except the V notch is deeper, making them a different diameter where the knife edge sits (same diameter as original Floyd at that point)
Here's the catalogue https://skydrive.live.com/?cid=1721b...C8410EAE%21167