Depending on the age of your car, the rear braking bias thing on the rear subframe may also be useful (if its not already knackered) stuff like ABS sensors if they come out cleanly will also be potentially useful,
I'm sure ive seen someone fit Fiat Coupe/155/145 front shocks to a 916 but they didnt use the 916 top mounts, they used the fiat/145/155 ones.
As for the Brembos.. not sure here. There must be a kit to adapt those calipers to the TS front hubs ? but not sure on the spacing etc of them.. they should fit under 16's though but might be limited in wheel styles (spoke back spacing) THe early PH1 style wheel wont clear them but the PH2 style 16's will likely be fine (they are on V6 916)
What engine is in the Coupe ? a 5cycl VIS or 4cyl turbo spider would be cool b:cheeky: