First of all. I am not a drift king myself. I tried it on other sims but I'm really bad at it. One of the big reasons why I want a drift spec car without having to download a mod is because it will get more people to race rfactor2. Not only in drifting but also racing in general. I think the drift community is a really good way to promote a racing sim or game.
A drifting car could easily double up as time attack or a caged trackday toy. The main thing a drift car has is lots of steering angle. And a drift car is setup differently of course. The 370z could have a drift upgrade or drift version added for example. Just give it a v8 and a 2jz as engine options and some semislicks and it is almost there.
Im updating the Supra and the Nissan,more cars to come and tracks,but in summer i have more costumers in my main job,thats why i go take a few more weeks to release them,and yes,S397 should make an oficial drift car hehe,and some tracks,but all whit time,no need rush