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Racetech springs and thier gold valve emulators have been a relatively inexpensive fix for damper rod forks for 20 years now. I bought these for my '23 NC750x but have not yet taken apart my forks to see what is involved in removing the Showa bend valves. I will try to report in the next couple...
(in the meantime, Ill answer the question...)
You can certainly use the prev model shock to get some height back or you can use links in your suspension linkage to lift the rear. the fork springs are not what limits travel (full extension) up front, if honda used internal spacers to accomplish...
The RT gold vale emulators are adjustable in thier own right with spring tension(and rates - colors, yel/blu/grn) and # of orifices(2-4) tuning. (seperate from your oil wt. and fork springs tuning...)