57 Dodge truck body onto 2000 Durango chassis

I am in the process of finishing putting a 59 dodge on a 2000 dakota chasis. Had to shorten the frame 23 inches and raise the bed floor a few inches to get the stance I was looking for. Other than that the swap was pretty easy. Here is a pic of the stance. Used a 5.9 magnum and 518 46RH trans. No cutting of the tunnel or firewall was necessary.

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Just starting a project with my son to put 54 Fargo onto something. Sounds like Dakota is best fit. Was your donar frame an extended cab? Is that why you had to cut 23”?