Ok this is what I have come up with for F-Body slave & master cylinder replacement options . If I miss any thing or get something wrong please correct .

GM stock T-5 replacment Part # 12527718
GMpartsdirect 111.77 W/O shipping
*Direct bolt in*

GM stock T-56 replacement Part# 12559912
GMpartsdirect 98.24 W/O shipping
*Will bolt to stock T-5 bell just has longer line between the slave & master, good choice if a T-56 swap is in the furture .

Mcleod replacement Part# 1302
Mcleodindustries 387.50 W/O shipping
*Direct bolt in for the T-5 or T-56 shares the same part # but the extra 287.50 will not make your car any quicker over the stock GM T-56 part . My be needed for a more HD clutch *

Hydraulic throwout bearing from Howeracing part# 82876
Did not call for price but but its up their
*This is a LS1 styel part that will work with a stock clutch & T-5 and they sell hydro lines that can be bleed externaly. Mcleod offers stuff too . This is a big money upgrade and is not needed for street use*