Dave: I agree with that. My bro had a Momo universal knob on his Maxima for years, no issues. It made it's own indents, though. Pretty soft steel in the lever I suppose.
Of course, a screw-on type shift knob is preferred, but it seems like he already has a universal type knob lined up for this project.
In which case, should the OP have a screw on type knob, when you hit step #4 Just reverse the steps, making sure you use the new shift knob and not the old one of course.