Right. There is a time and place for Harbor Freight tools. Avoid using HF tools that require a lot of force, or lift things that you then are going to be standing under. Other stuff from them can be pretty good for basic tasks.
As for the torque spec, Porsche sets a lower torque setting and then says turn the nuts 120 degrees. This is a more accurate method of tightening bolts than a simple torque specification, which may be influenced by other factors (temperature, lubrication on the bolt, etc.) It doesn't necessarily mean that the bolts are in there tighter.
Here's a link to me removing the head bolts:
Pelican Technical Article: Porsche Boxster / 996 Engine Teardown & Disassembly As mentioned previously, I don't remember them being difficult to remove.
Thx,
Wayne