Here is a used APPLETON power rack and pinion. It is the 2.5 and is 16 1/4 long center of tie rod bolt hole to center of tie rod hole.
The item "Appleton Power Steering Rack 2.5 UMP IMCA Wissota Sweet Dirt Late Model" is in sale since Saturday, January 11, 2020. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Suspension & Steering\Steering Racks & Gear Boxes". The seller is "wilsonmotorsports2012" and is located in Monmouth, Illinois. This item can be shipped worldwide.