Miata one was pretty easy. I also went with the NC '07 and it handled quite well with no ABS. Coming down the hill into that last haripin was a bit tricky, but once I got a decent tune on the car, it settled down nicely. Easy gold.
Clio at Brands was a bit tougher. Mainly due to the fact that a stock tune probably isn't going to cut it. I avoid FF cars in this game as much as possible, so I was quite rusty when it came to tuning the car. Finally settled on using the old GT5 trick of max front ride height/min rear ride height. It seems like it works in GT6 as well. That setting got me going in the right direction, and then once I got the rest tweaked in a bit, it was a fairly easy gold. I think that was my first time ever running no ABS on an FF drivetrain. Not sure if the comfort softs played a role, but I found it quite difficult to get used to. No ABS on FR drivetrains feels more natural to me.
Didn't get around to trying the Tesla @ Tsukuba yet. Not really looking forward to that one.