The outer rockers, clearly, were not replaced. The top, step, portion had another panel laid over them. The pan seems to be laid over the old floor too. I get the feeling the quality of craftsmanship would be unacceptable to many on here. I believe that target crate motor dates back many, many years also.
STILL with the prices this era of trucks brings, the BIN is reasonable, but I certainly wouldn't attempt to drive it back to the Midwest/East Coast...