the 6 speed manuals were pretty solid. The new (08+) 6 spd autobox is pretty beefy too from what I gather. Avoid the 02-08 autos if you plan on adding power, 75 ft/lbs more is all they will take before they will calf on ya.
I'm guessing this is all for a diesel.
Living in Surrey, Dreaming of home Lac Des Roches...