My guess would also be SMCKA, Carl would be the only place in Aus that'd possibly have a new one, but I think your chances are low.
 
There was someone else around a couple of years ago that was trying to be an Australian agent for Magnum Panels, but I don't think it ever got off the ground.
 
If you had a few spare $$, the cost of getting 2 shipped from the uk is probably the same as for 1.
Get 2 and sell the other locally to offset your costs?
 

Yeah SMCKA has one, he wants 2100 for it (going off the website - haven't called him yet).

Was hoping to find a second hand one TBH, you never know what people have hanging in the shed. I'll spend some time trying to track one down but if that is unsuccessful I'll speak to Carl.

I am going to the UK in December, flights are booked, there is always the option of waiting until then and packing a whole bunch of stuff on a pallet and sending it here. Will see what happens.

Do you really need all the panel or just the back half ? Just thinking cause of the back of only needed, track a 4dr down as it's the same to the arch, just depends on how good your panel guys can splice in the panel .
I don't know how bad the dent is but could the crash shop unpick it and attempt to straighten it out which is easier than doing it on the car , also cut out the bad crinkles and weld in new sheet.. suppose that lot will cost up near a new quarter anyways in labour, I'll be quite now lol..

I think that would be possible but yeah the labour costs would probably work out the same, the panel is pretty bad. The shop prior did a number on it after the accident. 
 
They basically just made the curve at the bottom of the rear screen out of bog and under the window is the same.
 

 

If I came across that damage, I be having a go at replicating it. A good panel beater, not replacer should be able to remake that part and doubt it'll be as costly as a full size skin..
I can remember doing a similar piece on my own mk2 coup due to rust some 25yrs ago and it's held up fine ever since.
Just my observation and interpretation of the damage.

If I didn't care so much about this car I probably would have a crack at it and learn along the way. The shop is willing to fix this one but I am on the fence about it, I figure if I'm going through all this effort to get a result why try to make a silk purse out of a pigs ear.

I've already decided for my next project I will do all the bodywork myself because I want to learn, I just didn't want to learn on this car. 

Good call and fully understand . If their repairs are real good it's an option if no panel becomes available.
I used to have a genuine rear quarter but left hand side, sold it to my boss for $200 about 25yrs ago. Can't believe how prices has exploded since then.

so can we start looking for your next project car then?
 

Please make it be a panelvan

Neither confirming or denying