When overhauling the transmission, replacing as many of the wear and damage prone components as possible will simplify the assembly process required to set up the gearbox correctly. Some of the collars and washers, in particular, act as spacer shims and need to be perfect with zero wear or damage.
This will improve the change quality and help achieve a smooth, quiet running transmission assembly.
You may wish to consider these other transmission components that could make the difference between 100% perfection - or something less:
Add as many new components as you wish to the same shopping cart, new spline washers 90452MR7000, plane washer 90459438000 and spline collars 23482MR7000 for example, and still only pay the same single fixed price shipping cost. Pro-workshop gasket sealant, 08C70K0234M to complete the job like a professional. Please be aware that this component may share other applications within the Honda model range.