This is what i get:
The first hole is approximately 53-1/2" from the dash panel and 7/8" from the top of the tub.
This next one has me a little puzzled:
The hole pattern is 32-1/8" from the dash and the top hole is 1-1/4" from the top of the tub. The bottom hole on this tub measures 1-7/8 from the top hole, but on a bow bracket that I have the holes are 1-5/8" apart :S. Maybe someone else can check there's but none the less, you can use the brackets you have to determine the spacing between holes.