WTB: Rear Drive Train Stuff

[Kosk]

Looking for rear drive train component(s). Used is great, as long as it still works:

- 8spd Shimano 105 short cage rear mech
(8spd mtn cassette a bonus)
or

- 9spd Shimano 105 short cage rear mech
- 9spd mtn shifter
(9spd road cassette a bonus)
or

- SRAM x7 or x9 rear mech w/ matching shifter
(mtn or road cassette a bonus)

Bueller...?