Just looked at the online Year One catalog and they still show the hole measurements on page 567.
Here's the YO info along with a factory print covering 70-1 Cuda and Challenger, and a pic of what your 70 Cuda trunk lid underside should look like, hope this helps?
i would trace the template out, then use a unibit [if there is room] to get close to the radius size of the corners. then use a wizz wheel to connect the dots. get close, then finish the cutout with a small flap wheel. just my thoughts on how i would do this, i'm not an expert, so keep that in mind.
i would trace the template out, then use a unibit [if there is room] to get close to the radius size of the corners. then use a wizz wheel to connect the dots. get close, then finish the cutout with a small flap wheel. just my thoughts on how i would do this, i'm not an expert, so keep that in mind.