1st Gen Wheel Lug Nut sizes?
 

What size ar ethe lug nuts on the 1st gens? Thread etc...

I wanna say mine were M12x1.25, but I'd have to look at them in the daytime.

M12 x 1.50

Nissans use the 1.25, but most other car makers use the 1.50.

The stock nuts also use a 21mm socket.