Can someone please repost the best scout parents. for the life of me can't find the post
First, in order to generate eggs as fast as possible, you should make sure the parents are of the same species and have different IDs. A different nationality is optional and helpful for Masuda'ing, but note that you only can replicate the shiny when you eventually breed with another foreign partner.
You can cut down the time for scouting when both of the parents are perfect, so that you can spot the random IV immediately - unless all of them turn out 31, in which case you have hit gold. Even better, but more difficult is to use a perfect parent partnered with a perfect 0/0 counterpart in order to determine the inheritance right away; rightfully so because obtaining perfect IVs is much easier within the safari than praying for a 0 stat. We may consider putting some ultimate-suck-Pokemon onto Pokecheck once Pokebank becomes available.
A Hidden Ability is also helpful.
Next we need to select species with a low egg step count. The clear winner is the Magikarp with a stepcount of 1280 and a gender ratio of 50/50. Another one to consider is Togepi with 2651, who is convenient if you aim for female starters and friends with 87,5/12,5.
There are the 75/25 and the 25/75 groups left but neither of them are very crowded and it is not worth to prepare scouts specifically for them. Just spam Magikarps.
Answering your question directly:
31/31/31/31/31/31 Rattled Female Magikarp
00/00/00/00/00/00 Male Magikarp
IVs can be the other way around. And in the case all your stats turn out either 0 or 31, keep a pair of imperfect Magikarps for confirmation.