Which TOM bridge for my Gibson SG?

[BadMonkey]

Hi All

I'm looking to replace the TOM bridge on my SG.  I know it's a Nashville bridge though I'm confused as to whether I need to get one with large or small posts.
Here are the links anyway:
http://www.wdmusic.co.uk/product/Nashville_Tune-O-Matic_Bridge_Small_Posts_GE103BC
http://www.wdmusic.co.uk/product/Nashville_Tune-O-Matic_Bridge_Large_Posts_GE103B-TC
Any advice would be much appreciated!
BM

[Philly Q]

If it's a Gibson SG of fairly recent vintage, then definitely small posts.

If it's an Epiphone, I think they use the large posts. 

If the posts have slots in the top so you can adjust them with a screwdriver, then they're the wide ones.

[BadMonkey]

Thank you! :D