Adam,
I have been making some enquiries re the same thing and whilst I can't make any recommendations I can let you know what I have found to date.
One place who used to do the dash restorations in Sydney was Dept of the Interior at Carlton. I went there yesterday and they informed me that they have sold that part of the business to a company around the corner. This company is Classic Dash at 169 Bellevue Parade, Carlton (their website says 1/247 West St, Carlton) Ph. 9547 3424 or www.classicdash.com.au. If you look on their site you will see they quote from $875 for a 240/260 dash!! I was told about a 3 week turnaround and they require all the guages and air vents to ensure correct fitment.
Another company that has done dash restorations for some time and has been mentioned before on this site is Dashboard Restorations in Acacia Ridge, Qld.
http://www.dashboardrestorations.com.au/index.htm
I think some forum members have had dealings with this company who seem to have had a good name in the past even doing dashes for Z owners in the US. I spoke to a chap there and he quoted around $700, but you have the added cost of freight to and from Qld which could potentially be around the $150 or more mark. They also indicated 2-3 week turnaround. From posts I have read over the years this company appears to do good work but I don't know how they rate compared to Classic Dash at Carlton or other companies.
Anyhow, until someone comes up with some alternatives, these are two for you to consider in the meantime.
Geoff