65 Barracuda Lug Nuts

eengledow said
Does this mean that the previous owner changed out the rear end

Either that or drilled the axles for BBP. Without pictures, there is no way to tell what you have.

eengledow said
What year would the donor discs and rear end been? or range?

No way to know without pictures. Could possibly be anything, but I changed mine over to 73 and later A-body BBP single piston.

eengledow said
Are the 5x4.5" thread size then 1/2" / 20?

Yes.