The problem with a slipper is that it does it's job with "popping out" when you lock the back wheel and try to undo the nut - basically turning the engine over!
The clutch holder is 1m long and the break bar is the same.
I am on holliday this weak and im going away on from wed to sat back about 9pm. any time otherwise. ps do you want to do the work here, as the compressor is a bit big to move