When most people think of iconic Japanese sports cars, things like the Nissan Skyline GT-R, Mazda RX-7, and AE86 Toyota Corollas ... Datsun Z car includes the 240Z, 260Z, and 280Z.

Yet, when it comes to older cars, process can be a huge part of the appeal. Firing up this pristine 1973 Datsun 240Z, part of Nissan's Heritage collection in Nashville, Tennessee, required the ...