which struts and shocks will fit?

The fitment of shock inserts into the strut housing is not the problem more than what will bolt to the strut bearing that mounts to the body. Anyhoot, there is no reason to look into this too much. Years of experience have proven that the early Golf (Rabbit in USA) inserts work for the front and in the rear the Beetle/924/944/Vanagon use the same shocks.