Jennsen, The 74-78 Mustang II are dimensionally the same as the 74-80 Pinto and Bobcats. However, there are some mounting differences between power and manuak racks but that only is a factor replacing manual with power. If you were loooking at other power racks, there was a ratio change in the later racks and the flared fittings gave way to O ring seal type fittings, again no factor in power to manual swap.
Good hunting.
Trees
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