2004 Toyota 5-Speed transmission identification?

[xavierbrown7390]

I have a 2004 Toyota Tacoma. 2.4L, 2RZ-FE, 2WD, five-speed. I was wondering if anyone knows what model of transmission (Aisin?) I have, and if it is interchangeable with one of the new Toyota 6-speed transmissions.

Any help would be great!