When I bought this '77 Z about 3 years ago, it had some gawd awful seats that were dark blue and tan. They were cloth, stained, had a couple cig burn holes, stunk, and were just plain ugly. I found out later they were from a '86 Toyota MR2.
So I went on a journey to find original Z seats. I found a really nice set that had new foam and covers from a 240Z. The only problem is they were WHITE, and I wanted black. But they were in such good shape, and the price was right, so I bought them.
After I yanked the Toyota seats out, I realized the 240 seats I bought had different seat rails. Crap. Had to put the Toyota seats back in.
So I hunted down a set of 280 seat rails off Evil-Bay. They were "supposedly" for all 75-78 280Z's. WRONG. The 75-76 are different than the 77-78's. These seat rails I bought were for the 75-76, and mine is a '77. CRAP.
Finally got a set of correct seat rails. Decided I couldn't wait to dye them, plus the weather was too cold and my garage is not heated. So I installed them. I guess white seats in a black interior didn't look too bad. Much better than the Toyota seats. And much more comfortable.
Weather has improved, so yanked the seats out and proceeded to dye them black with the Colorbond Vinyl Dye.
Pics of my progress...