How can I identify a 2wd vs 4wd head.

I have a bare head which I was told was escort cossie but this has been disputed by someone saying it's early 2wd.

I'll be totally honest - I'd listed on ebay (and got the start price totally wrong lol!) and pulled it as a result of doubting what I'd got.

I've been googling all night and can't find anything to help identify either - there doesn't seem to be much info out there these days.

Would really appreciate some help on this! Cheers