I need a hydraulic clutch

When I bought my brake/clutch assembly, it didn't have spring. I've been searching for a decent diagram, only found one down below.
I just don't see how it all works! or where's there's room on the engine firewall side for linkages. or where the ball thing will mount onto the frame? questions questions

I found a seller on ebay, was just about to buy it, but I thought I'd better check with you guys. Just some things I'm not very good at.
https://www.ebay.com/itm/1563637738...fcaA12flJu3g1WLPJkcIZu8n0zU=|tkp:BFBMrrDTh7Bl










I think I have the spring going to the wrong place?