The mod is also known as Mouse Y Sensitivity Fix. This is the last mouse sensitivity fix. Currently, this fix is the only one that actually fixes the problem.
For those who don't know, in GTA San Andreas the horizontal mouse sensitivity is not proportional to the vertical one, which causes problems with aiming, which can negatively affect gameplay.
There have already been fixes of this kind. The first version was from ThirteenAG and was included by the Brazilians in Mix Sets, after that an alternative version was created, which Silent included in their Silent Patch. But in both cases the problem was not completely solved.
I think that everyone should have this script, it will be especially useful for SA:MP players.