Would this be any good to you? http://www.ebay.com/itm/171032395994?item=171032395994&pt=Motors_Car_Truck_Parts_Accessories&cmd=ViewItem&hash=item27d25340da&vxp=mtr
You will be waiting a while for these but they do come up from time to time. I picked up a set of 15" 4x100 a few weeks back for €250, I almost felt bad for the guy I got them off he didn't know what he had.
This is the one I bought: http://www.ebay.co.uk/itm/PC2-17-4-TOYOTA-STARLET-1985-1999-ISO-STEREO-HEAD-UNIT-HARNESS-ADAPTOR-LEAD-/160834094538?pt=UK_In_Car_Technology&hash=item25727585ca