Well lets take the wrangler thing and run with it. There are 3 models of wranglers out there. YJ,TJ and whats the current one? JK? Very different mechanicals with the same basic layout. So different sections are needed to explain how to lift a YJ (leaf sprung) rather than a TJ (coil sprung). While the whole site still conveys the same lets lift jeeps motif.
Ya know what I'm saying?
I still get to play on the jeep site even though I'm wheeling a tracker its just in the "other section" cause its completely different.

About as OT as you can get without being in the rally section.