what rb25 ORC twinplate do i have

[brendan90zx]

i am trying to buy the throwout bearing for my rb25 orc twinplate, but i have no clue what model it is, i cant tell the 559 from the 709 and so forth. does anyone have an idea of how to figure out, or what bearing is needed



http://img230.imageshack.us/img230/8104/1orcs.jpg (http://img230.imageshack.us/i/1orcs.jpg/)
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http://img168.imageshack.us/img168/9118/1orc2.jpg (http://img168.imageshack.us/i/1orc2.jpg/)
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[dsastr_clan]

identify this thread

[brendan90zx]

i think its the 559 because the discs on the 559 pictures seem to be the same, as where the 709 or 659 are different clutch discs, can anyone else give me a better idea?