Other vehicles that work as part sources for a TJ?

...installing a Cherokee fuel rail in order to get a Schrader valve that many years are missing,

While this isn't a part from another vehicle, you can get this MOPAR 6539A hose and temporarily hook it up to get a fuel pressure reading. I haven't used it yet, just bought it and stashed it away when I came a cross it. You could probably make one relatively easy too.

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If you are needing a AC/alternator bracket for a 97-98 Wrangler you can also use one off of a 97-98 Dodge Dakota
Actually that was one I had forgotten about. I've seen several posts about using a Durango or similar truck's alternator in a Jeep because of its higher amperage. I do remember some modifications had to be made to the mount point, but they were minor. I'm wondering if using the alternator bracket in tandem with the alternator fixes that.

https://wranglertjforum.com/threads...o-alternator-into-your-jeep-wrangler-tj.3979/