I need the vertical and horizontal dimensions to place the "327" emblems on the front of my fenders. I need vertical dimension from fender body crease to bottom of emblem and horizontal dimension from front edge of fender to front-most edge of the "3" and "7" (right/left sides). Thank you!

Do you have an assembly manual if not i would suggest getting one because it has this information in it and could also be helpful in other areas.They can usually be purchase for about $20.:)

Speaking of the AIM, what is the reference line measured from? My front emblems have a "circle 20" as a reference.

Speaking of the AIM, what is the reference line measured from? My front emblems have a "circle 20" as a reference.
vertical distances = Datum line (from frame specs)
horizontal distances= from firewall (0)

vertical distances = Datum line (from frame specs)
horizontal distances= from firewall (0)

Thanks Gene. From the top of the frame and what point on the firewall? Seems like these would be tough measurements to make. Is this indicated in the AIM?

I purchased the emblem templates from ricks first gen and they were perfect. they were to scale and included the hole sizes that you need to drill. good luck