Im 99.9 percent sure that the t56 only comes with a larger 5.0 input shaft, it wont work with a 2.3.
You could just go and get a t5, which will be awsome for you. Switching from a auto to a manual is a very simple straight forward swap. There is only one wire or something like that that has to be bypassed to make the cpu realize its a stick. Im not sure which it is, but im sure someone on this board can fill you in.
Your gonna need a different flywheel, a clutch kit, bellhousing, clutch cable, clutch pedal, and throwout bearing,
trans, (obviously) Im not sure if the driveshafts are the same or not, i believe they are.
All in all, even if you can only use a 5 Spd, your gonna like it, my 2.3 5sp gets 50 miles per tank better then my girlfriends 2.3 Auto. Probably even more if it wasnt turbo and so damn fast. lol. Good luck.