Cush Drive Rubbers question

Hi all -

Putting order together - have parts list/ manual but not clear on drawings - do I need 3 thick and 3 thin rubbers for rear wheel ?

1972 manufacture Combat Roadster. If both thick and thin needed for each socket , I presume the thick one is to be positioned to take up the load under acceleration ?

On a different subject, Group 13 - engine mountings , etc. - the two nuts / washers for the shaft that passes through the rear Isolastic to chassis mount are shown but not numbered . Would these be the same as on front Isolastic?

Thanks in advance for any help .

Richard