Just for a laugh grab both distributors and compare them. I had a points version of a skyline dizzy on mine and when a changed it to an original i had to reset the drive because the distributors were different.
If you get both dizzies and line up the rotors the same, check the drive underneath and see if they line up too. Failing asolution i'm happy to come for a spin and see if i can help you suss it out.