A 1974 Duster - My 2nd one, 41 years later!
Marked up a 3 1/4" square/target where I think I want the hole, and went for it. Used the two long bolts included in the kit the keep the template from turning as you drill the rest of the holes. Happy with the results, now to clean the tank of the metal shavings and install pump.
IMG_3207 by
Alexl5280, on Flickr
IMG_3208 by
Alexl5280, on Flickr
IMG_3209 by
Alexl5280, on Flickr
IMG_3210 by
Alexl5280, on Flickr