Then I'm not the only one to see it that way. From my 2001 of my Dakota chassis I'll use the Dakota cab floor and firewall to weld into the 56 cab. When I place the 56 cab I'll probably move the cab back a few inches from the original chassis front wheel centerline, onto the Dakota chassis, then mount the front fenders and see how the tires line up in the wheel opening. I'll have the springs out of the front suspension so I can move the wheels up to full travel and turn angle to make sure it all looks right and clears everything. Since I am using the entire Dakota chassis as long as the cab fits to the Dak cab floor and firewall I'll know the engine fits relative to the firewall. Just a matter to make sure the Dakota firewall works with the 56 Dodge cowl area.