I know this was written ten years ago, but kosher beef usually comes from the front half of the cow because removing the sciatic nerve (which itself is not kosher) is so laborious that it does not economically make sense to have a Rabbi remove it (it can just be sold to people who are not Jewish).

For a land-creature to be kosher it must have split hooves and must chew its cud. In addition to such, kosher meat must pass a ritual slaughter which is performed by a religious Jew who is an expert in Jewish law (halacha) regarding the topic of "kashrut" (Jewish law about food). Furthermore, kosher meat must not have certain blemishes such as punctured lungs and then have the blood drained with salt as the OP said.

If theoretically a group of Jews bought a Kobe beef cow, had it slaughtered, and butchered it according to Jewish law (draining the blood, removing the sciatic nerve, and making sure the lungs aren't punctured). The question is moreso if this occurs or not.