removing camshaft pulley

[SVXMAN2001]

hey guys, i currently removing the heads off of the svx and am stuck trying to get the pulley off.

I know there is a special subaru tool, but after reading through posts it appears that it is unavailable and even if it is costs about $150!

I also read that others have used an impact wrench to remove the pulley, does this actually work? How does using the impact wrench overcome the pulley still turning (which happens when i try to remove the pulley with hand tools)? Also if the impact wrench does work, how does one go about getting the proper torque specs on the pulley when reinstalling? thanks, chris