Yep, if your frame has an internal headset, you'll need the gyro tabs which screw onto your headtube
(The old lower cable bracket you used to get with the gyros doesn't work on an internal headset frame)
It's not a huge job to get the holes drilled and tapped though, and you can buy the gyro tabs for about a tenner new.
Know a few people who have done the mod themselves / got it done for them.
Brian