WTB Diff Ratios to suit AE86 JDM rear end

[ke25 racer]

I am after some diff ratios above 4.11 (4.7 or 5.0 etc)
These are to suit the JDM ae86 diff (disc brake)

I am in sydney and need these for my race car.

[ke25 racer]

what series diff is it in the ae86 JDM?