Joe,

not sure if the Rick´s spring is the correct one, I think so. But obviously they cut off the ends of the spring doing this pic... Perhaps you give them a call?
I just posted 2 pics of my 68 emergency brake before restoration, showing this special kind of spring:





Rick´s First Generation, "Camaro Emergency Brake Preload Spring", part# JL-11, USD 18.99 (!!)



Then again I have a later style Camaro emergency brake (not sure, think it´s out of a 70 Camaro), also showing a special kind of spring but it looks longer and narrower than the one shown at Rick´s online site:



So it all comes down weather they cut off the spring ends for picture purpose or not...