Overhauling the transmission? Renewing as many of the high wear and damage prone items at the same time will attain the best results. Interfacing used parts with new may lead to premature wear of the new parts and a less smooth, somewhat noisier transmission.
Other related parts you may wish to consider:
Add as many components as you wish to the same shopping cart, new O-rings 0928017004 circlips 0833131286 screws 0211206123 & bearings 0926220080 for example, and still only pay the same single fixed price shipping cost.
Recommended gasket sealant 08C70K0234M.
This component will probably have other, sometimes unrelated, applications within the Suzuki model range. So always check by the part-number rather than the description.