$8K would be reasonable for that I think, I was looking at the gear ratios and I do not think would be useable as a daily driver. I am curious to see if Ford will ever offer something better in the way of maybe going to a dual clutch trans in the ST/RS's.When I spoke to Ken at Mountune in January he said they were going to be the importers for the trans. I don know if this changed, I didn't think to ask him at the last meet up. If I recall this thing was going to be about $8k. Definitely race only kind of money.
That being said, given how fast a sequential trans is, a factory turbo tuned ST could probably punch way above it's weight class and take down some heavy hitters. I think the time lost with our slow shifting trans hurts us.