mounting 996 disks to oval window- short axle box emergency brake??

[buggyboyshane]

hi guys, i have full set of disks and calipers from a 3.3s boxster........

just going to turn down stock disks and drums in porsche pattern and use them as a hub.......

my question...........how do i utilise the rear hand brake mechanism that works inside the rear drum.....

surely i need some sort of round 'raised' area where the shoes can sit over like on th real car- although this is part of the end of the arm casting i think