You can't go wrong with MTF mate.
I would go with the Redline MTL, Amsoil MTF or Fuchs Sintofluid.
75w-80 / 75w-85 MTF's - Manual Transmission Fluid
Cheers
Tim
Stock box = stock fluid
Only if you've got aftermarket parts like plate LSD etc would I use anything else.
For the regular street car (with some spirited driving now and again), we recommend Torco MTF