Looking for the 'DIESEL' Valve Cover

[BluevanACD2005]

When I owned a 1982 245 with the D24 in it, the valve cover had the word 'DIESEL' stamped into it, and it was shaped nicely. Now I have (2) 1983 760 D24T's, and they have these odd-shaped covers with a little 'step' in them, and no stamped lettering (I think they are sort of ugly). What years and models did this style come on? I have checked eBay time and time again, but came up empty. I think it would make a nice finishing touch to my engine (when I finally finsh it that is lol).

-Spenser