From what I remember two guys transform into Rainbow Dash and Applejack, the Rainbow Dash transformation first, discord shows up at the end.

It takes place on Earth.

And was +18

Might be Five Scores Divide By Four.

That would Five Score Divided by Four.

Five Score Divided by Four

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Five Score, Divided by 4 By Twisted Spectrum. Not only does the story deal with the two friends becoming Applejack and Rainbow Dash, but also what happened to Princess Twilight Sparkle, Rarity, Pinkie Pie, Fluttershy, Big McIntosh, and Shining Armor. Other stories in this collection show what happened to the popular characters in the MLP Fandom, such as the Cutie Mark Crusaders, Mayor Mare, and many more, including OC's.

Here you go
18+ version
https://www.fimfiction.net/story/130808/five-score-divided-by-four-matureversion
E- Everyone
https://www.fimfiction.net/story/93383/five-score-divided-by-four

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No that's not it, but thanks

6933859

The one I'm looking for just had the two dudes, but thanks

6933857

I've read that before and it's not it, the one in looking for only had two people transformed, thanks tho

6933842

Thanks but not it

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Is it an anthro story by chance?

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Wow. You are the epitome of research, aren't you? ::::)

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No

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I literally remember nothing else I feel could help the search

6934481

I don't know what you said....but ok?

6934598

Wait....why are you translating it?

6934733
I knew it was a bad idea to get into this, I just wanted to help. I don't know English, it's that simple

Ohh ok sorry you did help actually I though you were translating from English to another, which confused me, but now I understand, thank you for the help