Any more progress?
Nope, won't be until spring now. Too busy, not enough day light, and the welder is playing up. Exhaust with cats acquired though.
Re costs, all things are relative, as I keep saying. A Holden R8 gts goes for about 7k. Monaro about 10k I'm guessing. Vxr8 your looking at about 12k for something worth owning.
So given the cost/second hand value of engine and box, which bolsters the prices of these cars, you can see the age increasing value as the cars get younger. So knock 4/5k depending on miles, for the engine and box, off the value of those cars above, you get the value of the chassis. Total cost of this project so far is 4k, but I already had the car that I bought for other reasons anyway.
So to sum up, the way I see it, relative to the price of the cars above, this project is a comparative bargain. Arguably better interior than the monaro or r8 with more toys and allegedly better suspension geometry, believe it or not.
I had the car already, and should end up with a better car for between 3k and 8k less money, depending on which option you compare with.
....all being well, it's an absolute bargain. IMO.