Yes, you're right. And after Nissan restored them they sold them with warranties through Nissan dealers. Man, that would have been a great way to get a perfect Z.
Yeah, a buddy of mine in high school back in the early 80's got lost his license for a year for drinking and driving so he took his 78 280Z completely apart and rebuilt it all with high performance parts including a B.A.E. turbo. For that year his engine was basically a piece of furniture in his living room. When he got his license back he had the fastest car in town