I had no idea just how good that plane was and learned alot about it's performance in that book. I actually have some photographs from someone who worked on the program that aren't in that book. It is quite different from the F-18 and would have been more agile because the F-18 weighs 10,000lbs more than the YF-17. If they had had time to fix some the shortcomings before the fly off ended, it would have been even more amazing. However, with the F-16 using the F-100 engine, the end result was basically a given, barring any major problems with the YF-16 and we all know how that turned out.
Bill Gunston's 'early Supersonic Aircraft of the West', 'Bombers of the West' and 'Attack Aircraft of the West' are excellent and cover some unbuilt projects e.g. AFVG, SR-177, Avro Canada CF-105 Arrow amongst others