where do i find companion change vendors.. specifically for akarri (spell?) ?
Not sure about Akarri (?) but you will find customizations on Taris, Balmora, Blesavis and Illum as well as Fleet if you have as Security Key or CE.
Belsavis: Near where you land: M-5Q5 (1267, 259)
Balmora : Inside one of the buildings near where you land: Gunnta (277, –232)
Taris: Inside the Cantina (-1902, 366)
Fleet: Security Key Vendor – near the Cantina in the middle
CE; Collector’s Edition Vendor – on top of the Cantina
IlumOrb: Ilum Orbital Station Security Key Vendor
Ilum: Sergeant Koam at the Ilum base (513, 635)
- hope that's okay to cut and paste)