Hub centric whee spacer help

[jperez311]

Helloo.

So I have a question. I'm new to this spacer stuff but I'm asking so I can do it right.
I'm trying to buy some wheel spacers for my s14.
My question is
1) how do I know what spacers will be the right size for the hub bore.
2) how do I know the bore of the hubcentric part of the spacer.
3) what centric ring to use on my ssr gpo set up.
Don't know what size spacers I want to use yet because idk what camber ima run. Looking for almost flush look with a tinny bit of fender pull in the rear
Very little camber to save tires more.
Basically I want to use hubcentric spacers the right way so if you got tips then help a fellow zilvian out please.

Thanks