Yes I also noticed the output being 150 Watt. I hope that is wrong, because why would Ford downgrade in that department? The 250w system, even though not the best out there, sounds pretty decent.
What I noticed is that the 250 Watt system in my bro's El2 Ghia was not as good as the 250 watt system in the Xr8.
Hopefully the new ones are better, because it was cool being able to get a decent system from factory.