They do indeed look very similar to 944T calipers. If you can measure the 2 diameters of the cups, that may help you with your m/c selection.
The 2 calipers in your picture look identical, rather than symmetric to each other. Could ba trick of the light.
The arrow above the 'Porsche' script is the direction of the wheels rotation, as the leading pistons are usually a larger diameter. This means each caliper is specific to a corner of a car. The 3/16" brake pipes that connect each caliper half must go at the bottom, with a bleed nipple at the top of each caliper half. The nipples and pipes can be swapped over, depending on which way the caliper mounts (front or rear of hub)
Matt