Floyd nut for a Model 5a

[shobet]

Can any of you ladies and gentlemen tell me what size Floyd Rose nut a model 5a would take please?

Alos how much of a job is it to replace the original jackson locking system and normal nut with one of the Floyd nuts. I'm a bit worried about taking wook away from the area and weakening the neck area.

Anybody else done this without any problems?

Cheers,
Shob

[dg]

You can use either an R3 or R4 nut (both are 1 11/16"), depending on whether you want wide or narrow string spacing. I prefer the R3 (narrower) to keep my E strings from being too close to the edge. To install it, you need to create a shelf with a wedge of material to compensate for the tilt-back headstock. Here's a pic of my '84 Charvel neck that had a floyd nut installed:

[shobet]

Thanks