It is possible yes, but from my testing there is some small problems with it. If I name the new series like reiza98(or something else) then I don't get the series image to work on the menu. Since have to name it according to the rest, like original the highest is reiza20, so then I have to name my reiza21 for it to work. But, if people have other mods like DTM then that is reiza21 so then this mod have to be reiza22. So it have to be adjusted to everyone according to what mods they have...
So it's small things, like the mod works fine without the series image ofc but I decided to just do it like this now then see if I update it to a ''standalone''