The place to discuss scripting and game modifications for X³: Reunion.
What you describe as 'really low' is a normal speed for my connection. With that speed I was able to download the mod just fine. Therefore, I would suggest to try it again, at a different time of the day. You can also try using a proper download manager, with which you should be able to resume the download, when it stops.the speed is really low, around 250KB/s