They arrived today on time. Very good quality of the parts and the welding. A lot of paperwork in Japanese with some emission testing values which indicate that this model has been tested according to the emissions law in Japan (CO, HC, CO2 etc.). There's also a picture showing them installed in a 91 with the stock exhaust hardware. The inner diameter of the tube is 57 mm.
EDIT: the Japanese NSX uses heat sensors that other coutries don't use. I have to organise two blind plugs.
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