I used 2 metal trestles each side at the front, and 2 at the rear (bandstands). Put 4 x 2s across side to side. Put a 4 x 2 in the front where the spare wheel goes side to side. Ditto at the rear about where the petrol tanks are located, and with simple ratchet straps, just pulled the shell off the chassis.
The shell without doors, seats and other easily removable stuff is quite light. I could lift one end on my own.