Throttle cable/gas pedal issues - holley on a 318

There is a throttle arm that bolts to a Holley carb to connect it with the Chrysler throttle cable. Do you have it on your carb? It's something that is sold seperate from the carb. Summit's part # is HLY-20-7. I have a catalog from February & the price is $7.88. Might be a bit more now. It changes the mounting point for the cable to better match the leverage ratio of the Chrysler throttle. It also has a hole to bolt on an attachment for the kickdown linkage.