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On the topic of seats, these are probably as hot as there is...
Circa. 1984 Recaro LS with "gradation" fabric. These are not easy to come by in good condition, and these are probably not that. This set is currently listed on yahoo auctions japan for a reasonable price... but shipping just kills it all. There is also a similarly upholstered set of Recaro LX on eBay right now... although not in great condition at all [...]