O rly? My T3 has a 90mm head tube, and that's integrated so no headset stack height to be added. To get the same stack, assuming a conventional headset and allowing for the different BB drop, the OP would need an 80mm head tube, i.e. exactly what my Fort, with it's conventional headset, has.
Nonetheless, subscribing to thread to watch the blind leading the blind.
O rly? My T3 has a 90mm head tube, and that's integrated so no headset stack height to be added. To get the same stack, assuming a conventional headset and allowing for the different BB drop, the OP would need an 80mm head tube, i.e. exactly what my Fort, with it's conventional headset, has.
Nonetheless, subscribing to thread to watch the blind leading the blind.