I grabbed a front clip off of a 75-ish G10 when I bought my 82 G10. I thought having the core support would make the swap to early grille easier, but I don't think it will be anymore work than cutting the original core support for the headlights. Anyway, I grabbed mine at a local scrap yard here in VA and they simply cut the whole clip off and loaded it onto my trailer all for $300. I won't tell you how much vacation fun I had to bribe the kids with to help me unload the heavy a#$ thing off the trailer though.
I plan on cutting the whole thing apart, squirreling away the spare parts just in case I ever end up needing replacements in the future, and I have another top secret side project lined up to get a second use out of the fenders and hood in the meantime. Should start that project this spring/summer.