YR4M
Had a YR4M back in the day. The car was appropriately named as Masaki was the only person that could drive it, it was a nightmare on the track. After locking the front one way, installing Associated short shocks and changing the wheels and tires, it was acceptable but my HPI Pro would eat it on a decent road course. Had an M2 later but by that time the Pro 2s were out and it wasn't competitive. Also parts availability was atrocious. No more Yoks after that.