That is a clear Japan import 13B RX8 engine with 6 port and 6mt transmission. This engine is compression tested as well as the video is posted over the url for reference. You'll get the same engine as pictured. The rotor housing was fabricated from sand-cast aluminium plated with chrome, https://charlientwnn.thezenweb.com/mazda-rx-7-engine-options-64240449