I think you hit on a good thing with the extreme idea. Except, I would consider it to be a "more in depth" book that could include the tranny rebuild, the suspension upgrade and some of the actual extreme items you mentioned.
Taking the title
101 anything kind of limits you to another publication that glosses over a few things and leaves something to be desired in the degree of how much you devote to the details.
Many have said before that
101 Projects was complimented well by having a Bentley or Haynes alongside. I would strive to become independent from that situation. In fact, you'd have to on articles about polybronze bushings and shock/t-bar pairings because that type of information is not to be found in a repair manual.
Lastly, it seems you might have had to stretch a little to make the 101 number of projects. Even though there are several projects that could have been included, the format may have gone too large, I don't know what the goal was. But instead, there are a couple of dubious "projects" that could have been ignored, IMHO. It almost got down to "How to Vacuum Your Interior."
Overall,
101 is a good read and I believe has seen some reasonable success. Anything you do will most likely be worthy. It has to, you've got a reputation now.
