can get them from NZ, Hamilton http://www.msfibreglass.co.nz/fibreglass-body-kit.html

My vote goes to the top two pics of the red and white QLD coupe, the others are just a bit big for my taste..

i see saab 9000's all the time with black moudled rubber spoilers at the base or their rear windows, maybe that would fit nicely.

Surely an XU1 type spoiler would be pretty close and should be catered for aftermarket wise another option would be RS2000 type but the angle would not be as close as the XU1 as the slope on the back of the coupe and a Torans boot are very close angle wise.

hey buddy , bought my bobtail off a bloke on ebay for 200 (pricey and in bad condiiton but i wanted one really bad an after searching for months this one came up i had to grab it)
if you know a place who repos fibreglass parts id be quite happy to get a few made ?

Yes Bobtail style, similar to Torana SLR

If you want to make one it's pretty easy.

At a rough estimate a 100mm vertical sheet of material sticking up from the back will have the same aerodynamic effect as anything else on slowing the bound vortex and hence reducing lift and drag. A wing's only effective if it's out of the wake (above the roof?). You can make it look however you like! At least that's what the fluid mechanics expert at uni taught us. Doesn't hurt to experiment possibly measuring ride height on a smooth road before and after would give an indication.

bobtail or other aftermarket one?

Now CAMS have given us some fredoms i cam looking for a boot spoiler for the coupe.

Any ideas where you would get one from?