Trick Flow heads

I have a milodon pan on one of my dusters got in 97 it has no corner mods and I have the same pan on my other duster that was got in 2008 that has that corner cut off and fit without cutting the k. could your pan maybe an older version ? I will get my wife to post a pic later on .
It could be an older version but I bought it new from Summit in 2014 or 2015. I know my K frame came from a 68 Barracuda.