1965 Dart GT conv.
There is a company making decals that apply right over the face of the speedo and smaller gauges for (I believe) the 65 Dart and many other Mopars. I sent them images for both MPH and KPH. You have to lightly sand the face so the decal doesn’t have any bumps or imperfections when applied. I ordered a set of KPH decals for a 65 Dart, installed them and later sold the cluster. I will see if I can find the vendor.