So, I got this with my Centennial Edition Bowtie emblems. Figured if anyone wants a template for when they swap out the back Bowtie, they can use this to square it up. I printed it up and compared it to the original template I got, all lines match up. Just print on a regular 8.5x11 sheet.
2017-18_Silverado_Colorado_Rear_Bowtie_Template.pdf