VA Firetruck,
The revised addition is really good. You should read John's review. Many of the Stovebolters helped with the chapter on Big Bols. Check out
John\'s review of Tom's book.
The other fellows can tell you if it's worth the "buy." Since we have a Big Bolts section in the forums now, I imagine these good guys will be able to help you out a lot!
Cheers,
Peg