Hi Grebbo, and my congrats mate, it looks like you've scored (in number 2) a great start for a Model 4 Auto or Standard restoration....when you dismantle the axle housings, have a look for any wear on the housing extensions....this will give you a good indication of if it was an Auto with the Predicta flaps fitted at some stage.
Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member. Kindest Regards, Darryl