  We present a large-scale simulation of the ground state interface properties
of the diluted Sherrington-Kirkpatrick spin glass of Gaussian disorder for a
broad range of the bond occupation probability $p$ using the strong disorder
renormalization group and the population annealing Monte Carlo methods. We find
that the interface is space-filling independent of $p$, i.e., the fractal
dimension $d_s=1$. The stiffness exponent $\theta$ is likely also independent
of $p$, despite that the energy finite-size correction exponent $\omega$ varies
with $p$ as recently found. The energy finite-size scaling is also analyzed and
compared with that of the $\pm J$ disorder, finding that the thermodynamic
energy is universal in both $p$ and the disorder, and the exponent $\omega$
varies with $p$ but is universal in the disorder.
