Yeah, the Signia is would work, because the Signia mod is on the older BX platform in lore, so this could be the 90s generation of the Signia! Bam!
I see it this way: 200BX – hatchback with pop-ups Signia – coupe with pop-ups Plum – separate front end model I was referring to the sport Ibishu branch though, and you can find Ibishu Technica both in KLJP (performance 200BX and Pessima) as well as in vanilla racing Pessima skin.
Plum is just a very unfitting name and Signia is intended to be silvia. It replaces the numerical system of the 180/200/240sx and makes every jdm model a Signia instead of a Silvia/180sx. Making it a different name just seems a little off and there is already badges made for the signia wich are basically the highest quality badges in the community. I would suggest making it a sub-model of the Signia like signia Plum and then making the trim levels after the KLJP ones but altered to make them a little more unique appearance wise
Wait a minute, the Plum's lor implies that it was the cheapest car possible, while the Signia is still a higher status model. Moreover, I wouldn't really like to be associated with KLJP - the Plum is an independent model, except for the body and trunk, taken from KLJP. And the name is not so strange, if you know Russian slang name... I should change it, though.
And this is where it becomes problematic, as Silvia S13 (coupe) uses regular lights and 180SX S13 (hatch) uses pop-ups. At best, the Signia from KLJP would be an Onevia. So, my suggestion is to move away from the Nissan lore and build our own upon what we already have. This would be interesting, though only for lower-end 200BX and Signia. One, it would make sense given that Kei wants Plum to be the cheapest variant. Two, it wouldn't double the configs (which are numerous already).
did you read what i said..? i said that kljp already went away from nissan lore for that exact reason and making it a signia undermodel would make sense and move it away from nissan lore