btw, you can buy DCT paddle shift extenders.
How did your brake pads hold up?
I wasn't surprised that the M3 held it's ground against the GT3. (unless you meant the GT3RS 4.0) The gen 1 997 GT3 has similar power (but lighter weight) than the M3. But it can be a handful in tight twisties, and it certainly wouldn't pull away on a straight away.