Brutus, did you get onto Neale wheels?
AusRs, did you manage to get onto ROH about your spare?
Are wheels spacers/adapters illegal over here?  It wouldn't be hard to get a set of adapters made up to fit a Commodore pattern (120mm bolt circle as oppsed to 120.65 for Chev).  Having adapters to suit Commodores would open up a whole range of rims at a substantially cheaper cost.   I'm sure offset wouldn't be a problem, just getting 8 or 9 inch widths.