They come up from time to time on ebay, but you are more likely to find the American racing version. Now i'm not sure how exact they are to the ARE's but i did have 6 of the ARE versions at one time and they look pretty close.
Keep this in mind, those wheels will NOT clear pbr front cobra calipers on sn95 spindles, i know this for a fact because i tried it (just as an experiment), that's why i sold mine off since they would never fit on the car again. Calipers hit the spokes of the front wheels.
Also note that there is a handful of rears, at least 3 different offsets and widths, yet another thing i know because i had a few different oddballs. Not all fit equally, so verify the sizes on the ones you have.