Ohlins has made a series especially for the MH900e; earlier this year, they did another (small) batch. Get in touch with Dan Kyle for more info / availability.
Some owners have modified the Ohlins forks for the SportClassics (Sport / Smart); "all" that was needed were extension pieces for the top.
If I recall things correctly, it's the adjustable Showa's found on the (some) ST and SS models can be used on the Hailwood.
It's a shame that John Clelland lost the server that hosted the Hailwood Owners Club website. Much excellent information has been lost.
You might want to get in touch with Chris Kelly, owner / founder os CA-Cycleworks. Chris is very knowledgeable about the MHe and has modified and adapted suspension from other bikes to work on the Hailwood.
Sorry that I can't be of more help.
Good luck,
RonB