This is a picture of the bulkhead in 84 110 PU of the wiring loom through to engine Bay Area.
Still in truck, the sills were welded to bulkhead very rusty footwells so on.
4D6D620C-8694-42A9-B205-9EB3EE03A949 by seaswood, on Flickr
This is a picture of the donor bulkhead no through bulkhead...