Nice pick up....
I restored an EK ute a few years ago and had to do a lot of making of panels... There was some easy stuff to get and some stuff that you just could not get and had to fabricate... Pain in the arse in both respects to be honest as I had to call around to and visit a lot of wreckers to get certain parts...
Oh and this was before you could jump on the net and just google it to find it (ok, ok, it may have been MORE than a few years ago) so a lot of scouring of wreckers was involved....
I still recommend a good scrummage at the wreckers, you will be very surprised at what you will find You will be surprised at how many parts you will find for old dattos.....