Right off the bat, you are one VERY lucky guy! That car is very valuable!
I can't claim expertise with the gearbox, but there are several on this forum whom can. I'm sure that you'll be hearing from them soon. On the other hand, If you have any electrical questions, I'd be glad to help.
Good luck with the car, and congratulations.
On their death bed, nobody ever said, "Gee I wish I'd spent more time at work!"
'68 Sprite 1275
'76 Midget 1500