I just sent off a money order for Leos book today.
Gee I have never been excited about reading before.
It's got a lot of good stuff in it. It does lack some info, but that info can be made up for using "Engine Builders Handbook" by Tom Monroe, or using a Motors or Clymer manual from that era.
Leo's book is about as close as you'll come to getting lots of detail about the inliners. My only complaint is that sometimes there isn't text that explains some pictures. It also glazes over some of the more basic stuff. So hopefully, you have had some engine experience in the past. All in all, the book is worth its weight in gold if you mess with these things.
