The original air shockers in the 70's and 80's was munroe. I have pedders airbags in my trike. I had boss airbag but they leaked. Pedders ones, as used in Landcruisers have the rubber bag all round and udner. Boss have a sandwich plate at the bottom and leaked there. consider airbags. can pump up to 100psi if desired.
www.youtube.com/watch?v=HXwh4z8d66o
SUBARU ea81, VW auto, Detour camper
My ex girlfriend said "its me or a trike". Her big mistake.