Looks like the leaf spring pad locating pad head,(possibly bolt head?) ,got some relocation love ,there. My '67 Cuda with 002,003 springs,& Imperial shocks were a lot closer to the front of the fender radius.
Love Bucky Hess"s SS/SA class Cuda. His kid does most/ all of the paint. Would love to watch one, of the Hemi SS shootout's. Still love old school. 60's style heads up racing.