And I thought I'd had mine for a long time (my first car bought in 1981). It too will be subjected to a full restoration to original one day (probably a retirement project....). Unfortunately mine has been modified / messed around with over the 18 year period I drove it, and I tossed out many of the original bits
Slowly acquiring what I need, but not as easy to find stuff as it used to be.
I just had a look in my factory service manual, standard camber is 0 degrees, + or - 30 minutes. Interestingly, springs are slightly different lengths on each side for right hand drive cars. It also gives woie diameters, free lengths, etc but I doubt this would be useful nowadays.
Perhaps you could get hold of a pair of King springs or similar that are close, and adjust with "spacers" between car body and the rubber insulator that the top of the spring sits in if neccessary ? One of the aforementioned dodgy modifications I did as a youngster was to cut the springs to lower the car, but I made the mistake of not figuring in the multiplication effect of the suspension setup, and the car was lowered way more than I intended. I "fixed" it by cutting donuts from marine plywood and fitting as above. Perhaps nylon (eg from a chopping board or similar) may have been a better idea....