I think most of the T5's are .6 OD. Yeah close ratio is an interesting trans, most do prefer the wide ratio for the lower 1st gear, especially with small blocks.
I run a close ratio and really like it. It's cool dropping into 2nd at 60 mph and going for it. My big block has a LOT of torque so the high gears are no problem.
Getting the clutch to release properly, a combination of free play, seat adjustment and pedal stroke makes a BIG difference on how easy or hard it is to shift.