Overhauling the transmission means renewing as many of the wear and damage prone components as possible. This will attain the best results; interfacing used parts with new will lead to premature wear of the new parts, and a less smooth, somewhat noisier transmission.
Other transmission related components you may wish to consider:
Pro-workshop gasket sealant: 08C70K0234M - for superior results.
Add as many items as you wish to the same shopping cart, new drive sprocket 5810004620 bolts 90118958003 & splined Washer90451KY2000 for example, and still only pay the same single fixed price shipping cost.
This component may have other applications within the Honda model range.