Anyone that has tried to dopewer there rack on a miata has probably seen the directions on the flyin Miata website. However the later model miata rack is far different than the one shown there. Also that method dont mention this rally cool idea with the pinion gear. This is a verry helpfull and fun article. this is how i will be doing mine now.
check it out Project Miatabusa Part 5 - De-Powering the Steering

 

I made this write up in early 2011 as a companion to the FM instructions that would cover an NB rack. Depowering the NB Steering Rack It looks like the miatabusa guys beat me by 4 months...