Here is an Ebay auction for a set 8 used Hipo connecting rods by Ebay member "willgames10" with a Buy-It-Now of $2,500.00:
The product is a set of original OEM Ford 289 connecting rods specifically designed for the 1964-67 Mustang vehicles. These connecting rods are made of steel and weigh 559 grams each. They are vintage parts manufactured in the United States, with the manufacturer part number C3AE-D. These connecting rods are performance parts and come with 3/8 square top rod bolts and no manufacturer warranty. They are ideal for classic car enthusiasts looking to restore their K code or , Shelby vehicles to their original specifications.
These rods have been reconditioned and are not numbered. Have been in storage over 30 years.
OEM C3AE-D Ford Shelby 289 Hipo Rods With 3/8 bolts 289 -V-8 Mustang 1964-67 | eBay
-Fred-