Just got my copy of "Superbike Preparation" by Jewel Hendricks in time for my birthday, neat.
As we know him in sohc4 from his "mantlepiece" article and his photo with his racing 550/591 (it done a 12.03 ET if you can believe that...), I thought that this was written in 70's but it turns out that its from 1988 so deals with much more modern stuff like GSXR's and FZ's.
After a quick leaf, looks like a very good guide to all what you need to do to prepare a bike for racing or serious track days, the knowledge quite applicable to our sohc's.
The disappointing bit for me was that with all the details he goes into, there's not much specific info on valves or carburetor sizing, porting tips, exhaust length, suspension spring rates, etc.
If it's your first race bike build, it really shows all the steps needed to do it, less informative if you've done such work before. Still looks like fine reading as there are plenty of small anecdotes in there.
TG