Here are some measurements I took from a 70 D100 Adventurer in a junkyard....I removed the turn signals to install them on my truck, so I took some pictures =so that I could accurately drill my hood
It is 29 1/8 from the center line of the hood to the center of the signal holes

and it is 36 3/4 to the center of the bulb hole from the back edge of the hood

hope this helps !!