My logic being that it is slow to get a new topic added, I am still foaming at the mouth waiting for a Space Gear thread and if you see the Pajero thread, it is completely overrun with people asking for the Evolution version of the Pajero, and it is even farther away from the stock Pajero than the TOM’S Aristo is from a stock one.
If it’s just a modified version of a car, I see it as valid to post in the threads that exist… Saves forum clutter and helps focus the votes in one place. But hey, I’m new around here, the mods can just make a thread for it and move my post there! 
But hey, I’m new here, what do I know! 
(lol just as I did the exact same thing in the Altezza thread, your timing is impeccable)
sigh… I am trying to apply logic and reasoning into all of my posts, and trying to figure out this forum’s etiquette and weighing the actual purpose of the threads—to get the cars into Forza—to make my post placement most ideal.
Let’s look at the Altezza:
Toyota Altezza RS200 2004-2005 - 446 votes as of this writing
Now, that’s an RS200 version, although people are asking for the Lexus version…
2nd most popular thread:
Lexus IS 1998-2005 (Toyota Altezza) – 257 votes as of this writing
Pretty much the same car, and the most logical thread, but someone even said:
…pointing people to the more popular thread.
there is also:
Toyota Altezza 2000-2003 - 115 votes as of this writing
This thread has a lot of votes but zero pictures and not too much fandom at the moment.
and then there is:
Toyota Altezza 1998-2000 - 67 votes as of this writing
…this thread seems most logical for posting in, for a 1999 limited edition Altezza, but honestly it is like a graveyard that doesn’t need to exist. You could literally crunch all of these Altezza and IS200 threads down into one single thread and it would be more effective and clean overall for the forum. I don’t think we need another Aristo thread as it wouldn’t gain any traction and we would just split the community because most people don’t even know that Aristo version exists at all. I know about a LOT of special editions of cars and I will just post in the most logical threads I can think of. Japan has a way about making super rare limited runs of cars and I don’t think we need the clutter around here of all of them. I will make a Pajero Mini thread suggestion (as that is a completely separate vehicle about half the size), but I don’t also think we need a another separate Pajero Mini Snoopy Edition thread, as badly as I may want it.
Sounds like we need an Altezza in the game though!!! That’s a lot of votes across a lot of threads! I don’t have a lot of hope for an Aristo in the game but I need somewhere to put my thoughts and information, so Forza forums it is. I am proud of the Altezza love.