The 327 is a SB1 engine? Or did you get an LT1? Most 350 engines have 327 stamped on the side of them because they share the same dimensions but a longer stroke crank was used to get the 350 ci.
There are two T56 Transmissions. The LT1 used a pull style shift fork with hydraulic pushrod slave cylinder, whereas the LS1 T56 (1998 - 2002) used an entirely hydraulic throwout bearing.
You will need to know what transmission fits that clutch.
Take a picture of the engine... does the intake look like this: