Overhauling the transmission means renewing as many of the wear and damage prone components as possible, when replacing this item.
This will attain the best results, as interfacing used parts with new will lead to premature wear of the new parts, and a less smooth transmission action.
Other parts you may wish to consider listed below:
Order all the gaskets, seals and bearings required for reassembling the engine and transmission at the same time and combine shipping costs to just one fixed price.
Try the same gasket seal used by trade professionals: 08C70K0234M.
Please note, this part may have other applications in the Suzuki range.