As Tom says, that’s a fabricated bracket… but it probably attaches in the same way as the stock piece. If you’re standing behind the engine/transmission to the left side (where you’d be sitting as the driver) then the bracket attaches using the two most counterclockwise block-to-bellhousing bolts. The slave cylinder part and hydraulic line faces are removed, and the piston and rod exit rearwards.
.. I found this picture on the web (assuming it lets me link right into eBay)
The bracket attaches using the two bolt holes at 9 and 10 o’clock relative to the transmission input shaft centerline.