Which did you get the HSS spiral or carbide spiral. There are two kinds. The spiral HSS works pretty well to reduce chipout, but dulls quickly. I have a spiral HSS head on my jointer and have ordered a Byrd head to replace it. The head worked well, but dulled too quickly.
The Byrd spirals are awsome.

Installation won't be bad. Just drop down both tables all the way and you'll have easy access to the head. You will have to remove the belt, but that is no big deal. The rest is dependant on your particular jointer. I'll have bearings to remove and reinstall.
Good Luck,
John
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