I apprecaite you posting this up, all the help Jim and I can get for the book is well recieved. So far progress is slow on the data front...the GM lawyers said "no" to Corvette and Fiero GTP data...Southgate also said no to our data request, but forunately there are enough people with TWR data that he's input isn't necessary.  Plus he was on the side lines as far as TWR USA was concerned.  Other than that we're still on course for completing the book next year some time.  Can't be sure when it will be published, but the price point is around $50.  Hopefully you all will find it worthy!