72-93 truck clutch linkage questions

Where did you get this stuff? Did someone have a body lift kit while using some of this stuff? Is this stuff from a pre-81 vintage, there not exactly the same. some small differences is the clutch and brake pivot point distance changes. Stuff for a 81+ should look more like this (see pic). that apply rod has been lengthened, why ever.
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The body lift makes a lot of sense. I don’t know what exactly it came out of. It all came in a bucket of parts with the transmission I bought from a dude, who bought it from another dude.
I’m having trouble seeing any differences in the picture you posted, and my parts.