These recovery vehicles were a necessary and real armoured tank,they had to stay with the armoured advance and be able to assist any vehicle in trouble under battle conditions.Here are a few drawings which I used to build the recovery panzerIV.
I also converted a Panther to a Bergpanther,then one was released from Italeri. There are panzer III,Hetzer,TigerI and Famo recovery vehicles.
"Battleing Bastards of Bastogne"