The 944T calipers are the same as the C4 and 993 calipers they all have 44/36 mm frt pistons and 34/30 rear pistons. The 944TS used the MO30 calipers in the front these are also called Big Reds, they also have 44/36 mm pistons. The primary purpose of bigger brakes is to increase the thermal capability of the brake system. To that end bigger rotors are required. The 3.2 l Carrera rotors are a small step in that direction. IMO a better one is to use 304x32 mm f and 299x28 mm r rotors from a 78-79 930. The rear is no problem the rotors are a direct bolt on, after you ditch your backing plates, the calipers will need the mounting holes slightly repositioned. In the front you can use factory floating rotors or get after market non-floating rotors, you also need to machine the caliper to accept adaptors for your struts. Here are some pics of this setup on my 76 Carrera 3. 944T/C4/993 calipers, 930 rotors.
