Good luck. That's a style that is only just now being tapped by knock-offs in 18s.
Are you lowered? The added offset definitely increases the choices. If not, finding anything in +55 outside of the OZ or SSRs made for the Kappa is pretty difficult.
I'm sure you're aware but XXR is coming out with a Classics replica and if you're willing to run pcd variation bolts they may fit but being +35 so might need a little fender work. XXR 531 Wheels - Brand new rims for 2012
I know you can get some BBS RS reps (not quite the Classic look but race mesh anyway) in 5x112 as well.
Ditto, believe premium wheels enhance the perception of the cost of a vehicle. However, seems to be very thin line between where wheels enhance the price of the car and where they begin to look as if they cost more than the car they are on, along with having to worry about them being stolen.