Can't seem to find a model name for them, but they're all current release rims. One piece aluminium cast. Made by Enkei
17x7 +55 5x114.3 for NC Roadster and Atenza
18x7 +45 5x114.3 for MPV
18x8 +50 5x114.3 for RX8
Available new for 30-50000yen per rim.