Go by part numbers, as some RT's do have the 30mm SRT front sway bar on them.
Front Sway bars:
P04782541AB = Verified 25mm
P04782543AB = Verified 27mm (RT)
P04782544AB = Verified 30mm (SRT & RT/STP)
Just post which part number yours is and people can decide if they need it.
PS: I have a 16mm SRT Rear Sway if anyone wants to pair it up with your front bar...
For reference:
Rear Sway Bars LX & LC
P68046012AA = 11.95mm
P04782871AB = TBD
P04782872AB = 15.16mm
P04782873AB = 16.1mm (SRT & RT)
P05180016AA = 19.8mm (RT/STP)