We use all original parts if you'd like. We have the MkIV Brahma motor. We also have the Koda MkII and Tumult Mk III.
We did and still offer alternative parts to create different effects depending on your listening taste. (Some people on the forums talked trash about this option, it's just an option.) Dan Wiggins the founder of Adire has us on the AA website as the US repair center.
The parts we have are from when AA went out of biz. Check out our site, http://www.robotunderground.com In there are links to the ebay stores to buy the drivers, you can also save $20 by going direct.