The article came out in the April 07 issue of Sport Aviation. This link has a picture, kit for sale and also lists the parts needed for assembly.
http://www.barkeraircraft.com/Engine-dryer-kit.html
The article recommends that you get a silent aquarium pump as opposed to a vibrating reed pump due to the noise that the reed pump makes.
Assembly:
Use a two-liter bottle with screw on bottle cap. Drill 2 3/16" hole in bottle cap. Cut 2" piece from rigid tubing and hot glue 2" piece in one hole and the 10" remainder in the other. Place Air Stone filter on end of long rigid tubing. Filter should be about 2" from bottom of bottle. Fill bottle with silica gel and attach cap. Use the tygon 1/8" flex tubing to connect pump to 2" piece. Rest of tubing goes from the long rigid piece to you engine oil filler cap or the engine vent.
When the silica turns blue, place silica in oven and heat at 350*F until it turns pink again.
Thanks for bringing this up as I wanted to build on of these and had forgotten about it.
JF