Welcome to the club!
Presume car is restored to as new OEM condition? What most of us have learned here is to restore first (make up for the deferred maintenance relected in the steeply discounted price most of us paid) then modify later. Otherwise most end up with a kewl looking driveway queen. No point putting lipstick on a sick pig.
http://www.infinitipartsusa.com is a great sponsor for OEM parts.
Lots of great information in the posts here. Happy reading!