They are either 964 3.3t also used on 964RS or more probably 993. In any case fronts
They are not 'Big Reds" which were used on 964 3.6t and 993RS/tt/928GTS
The only difference between 964 3.3t and 993 is the height of the caliper mounts
993 have short mounts to be used w/ 304x32 rotors
964 3.3t and 964 RS ghave tall mounts to be used w/ 322x32mm rotors
regardless of the color
964 3.3t & 964RS tall mounts
993 short mounts
on left 993 on right 993RS, the RS aka 'Big Red are id'd by the big hump in the middle to accommodate the tall pads
