Dropped D Tuning - I show tabs for the entirety of the acoustic guitar part for Saucers by Ozric Tentacles off the 1991 album Strangeitude. Don't worry about counting time signatures except in the couple of rest measures, just go by the feel of the riff. Also, I didn't notate the palm muting, I guess to keep out clutter, but the middle section at 2:41 where you hang out on the 6th and 5th strings a lot is palm muted.
202 bpm