Wahrsuul, You should take a look at the "Sturgis R18" Goldwing reverse trike conversions...The Sturgis company is working on the 2018 and newer GW conversions now...Should be available in the spring of 2022...
I have ridden the R18 and LOVED it...But it lacked 3 features I liked better on my Spyder...Poor reverse, no parking brake and it had a clutch ...The 2018 & newer GW with the DCT fixes two of those problems...And I think there is a aftermarket parking brake available...larryd
http://sturgistrike.com/