I bought some ffrom MSA a couple of years ago and am not real happy with them. The pattern is close to the original but not exact. They are missing the "grain" that was in the center portion of the seat on the originals.
I visited Classic Datsun Motorsports when I was in CA last year. They restored many of the Nissan 240Z Program Cars. Theirs are the closet to original that I am aware of. Here's their website: http://www.classicdatsun.com/
Marty
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