not being able to read japanese, I just see a small thing saying you go from 148 grams to 51 grams, so I assume its just weight savings. I would much rather they make a solid piston to absorb more heat. Thats the common piston upgrade for corvettes and such.
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NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968
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