Going to get a clutch in the next few days - Pretty much chosen an Exedy - Which model is right for my car?

FJK-7123HD - Looks to be a 5 speed one, but exedy lists this as suited for GC8's
FJK-7853HD - Looks to be suited to 6 speed (STI), but Exedy lists this as GDB WRX?

Which one is the go-er?

Im aware either would suit a 6 speed transmission (Is that still correct for the above clutches?) Looks like for some reason Exedy has different models for them?

__________________
[SIGPIC][/SIGPIC]
Should have bought an STI