Front Axle nut size?

I have searched the archive with no results

I am a competent wrench turner about to change the front half-shaft on my newly aquired '92.

What size is the axle retaining nut? I should have a socket big enough to fit, but you folks could save me a trip to the store.

Any hints on swapping my right side axle shaft out?
I have the complete service manual set to help me, but experience is sometimes worth more than text.

I had a dream that it took only 2 hours. (I have air tools! *laughs*)

Thanks,

Stephen
1992 stock SVX