Need help determining which hardware kit I should order..

Well of course I forgot to measure the width of the brake pads, but here is what I have so far. They are the big bolt pattern rear (my front are small bolt pattern disk brakes but that is another story, now I need to figure out if I should or could go big bolt pattern on the front, not sure how much work that is changing that out). How do I know which drum and hardware kit to order based on these measurements or do I need more information?