Actually I wasn't going against the race/rally rules because the Rally Base Cars are all road cars.
I was planning that when the drivers get the car they PM me and I give them the specs but they can't tell anyone what it is until they are releasing their tune. So kind of a pseudo-form of Praiano's system without the trading thing, just keeping the car secret since they'll only be able to work with the car they've got.
I would say it would be better for a separate sort of shootout for them at certain points. Tuner car rule was of course rather controversial at the FF Shootout because two Trial Celicas just ran away with it, so I would really give a slightly bigger limit to cars with some form of downforce on them among the normal road cars. It would help in the presence of an R390, let's say.
Also yes, I was the one who said about my shootout first...so I suppose you'll be seeing it at some point in early September. I just need one more car for prize giving to give away and I'm done.
In case you're wondering, I've collected almost all of the tradable rally cars in this game (the previous OCDs helped me a lot) and the prize for the shootout will be any 10 of them, plus a few other goodies. Second place will receive 5 plus goodies, third will get 2. There'll still be some cars left which will go to testers but there'll only be 6 unless I get the two rally cars I didn't pick up...
And I have to send them all as well.