This T5 slave cylinder kit provides everything needed to install a slave cylinder on to a T5 transmission:
T5 Hydraulic Clutch Brackets
Firewall Reinforcement plate
SS hydraulic clutch pushrod,
7/8" slave cylinder
Mounting hardware
The master cylinder and connecting lines are not included as different applications my require variations of these parts. On Most 65/66 cars, equipped with a power booster, this kit will not work. however I was able to install this kit with a MPB boosetr kit by making some small modifications.
Note: 67-70 Mustangs use a different kit than the 65-66 Mustangs. ALSO double check your bellhousing to confirm which kit you need. Some newer bellhousings have the clutch fork in a lower location. Please see picture below. The bellhousing on the right works with a 94-95 T5 kit and the bellhousing on the left requires the 86-93 (Foxbody) T5 kit.