It crossed my mind just to try & grab the front struts + rear diff assemblies to ensure I get everything. KE30 & 35 parts should be easy to find in the scrapyards so I'll do a bit more hunting.
I understand that KE70 brakes can be bolted on in front however I understand that as the diffs are different (borg warner), it is not a simple matter of getting KE70 axles but rather adapting the whole rear diff assembly to fit the KE20.
Hence why I am limiting my search to the KE30 range of corolla's at the moment.
The other model which I notice is plentiful in scrapyards are lots of old Corona's - however I am not sure if the strut assemblies / brakes + diffs are as inter-changeable as the KE corolla's.