With all the electronics a premium has it's possible. I also looked for specs but couldn't find anything. I have the base model though. Maybe try checking autozone online for recommended replacements?
O'Reilley's website shows replacement alternators at 175 amp for cars without heated seats, and 200 amps for the ones with. That should indicate that Recaros would get you a 175 on a GT premium, and leather would be 200.