If all else fails, you could get either an overlay, or a vinyl decal to replace the badge, made to look just like the 40th badge.
thats true and also an option but im not sure if reflective concepts makes a vinyl decal or over lay for a 40th, and it would be quite hard to match it perfectly. also depends on where its pitting
97 GTP DD, 1952 Ford F-1 Resto Project, 2006 Mustang GT "UnDeR CoNsTrUcTiOn", 02 GPGT SOLD!, 98 GTP Parted/Scraped