The engine has no innards at this stage and the gearbox is as found. The crankcases have to be attached to connect the cradle to the front isolastics in order to form a rolling chassis.
There are only 3 flexible attachment points to the frame for the entire power/transmission with Norton's "wonderful" Isolastic system which attempted to control the vibes from a grossly over bored 500 twin from Neolithic times.
The tyres have plenty of tread left, they are new.... about 40 years ago!!