Axle and Wheel studs questions

[spider4me]

Ok, so there are a few variances in lug nut and stud threads. I see on another thread there is a wobble bolt available, and within one of the links posted I found different lug nut threads available.
I have found that the front brake rotors come with new studs, which are shorter than the rear axle studs. Can I replace the front studs with longer ones to give more thread length? What are the stock threads for 1973 and 1974 Spiders and GTV's, both 2L?
Are they 12 x 1.5 or 12 x 1.25?

I have two different wheels that I run on both cars which require different lug nuts.
One is the Rota wheel that looks like the Panasport, this one uses a conical seat lug nut.
The other is the old style American Mag Libre wheel which requires a longer lug nut with a sleeve like fitment that seats deeper into the wheel hub. Ideally I would like to only have one set of lug nuts, but I think that is not possible.

Thanks for helping me with this quandary.