I know this is probably a long shot, but I've been looking for an 18X9 5X100 wheel in the 44 to 48 offset range and haven't been able to find much. I'm thinking +45 offset would be about the perfect fitment on the widebody 2011/2012 WRX without having to do fender modifications but still being 21mm less tucked than the stock wheels. It might also work well on older model WRX's possibly with some slight fender mods.
I really like the T2R style wheel and I asked Tommy at wheeldude about it. If we can get around 15 people who are interested we might be able to make it happen.
Post here if you're interested. 18X9+35 G-forces run for $950 a set and 18X9.5 T2R's run for $1050 a set so I'm guessing these would be in that same price range.