Hi Steve! Been down this road already b/c my previous abuser ground the front studs down, probably because replacement lug nuts were too shallow.
Anyway here's from my notes re. OEM parts. Never 100% sure but....
Front: 8ea M12x1.5mm, L ~55mm (~2.17"). Head: 18mm dia x 4 mm thk; spline section 14.0mm dia x ~19mm. Stud extends 36mm from hub surface.
Rear: 8ea M12x1.5mm, L ~42.5mm (~1.67”). Head: 18mm dia x 4 mm thk; spline section 14.0mm dia x ~10mm. Stud extends 32.5mm from hub surface.
I have a trashed stub axle from an early car and it looks like it would use the same rear studs as 1010...same flange thickness, fwiw! Regards, Nate