[KTL]

The heads & cam tower is a personal preference thing. A lot of the guys that do engines all the time prefer to assemble the heads onto the cam housing and then install that assembly as one completed unit. So don't feel like you gotta follow Wayne's book if you prefer the other way. If guys that do this type of work for a living assemble them that way, and their work approach is to avoid customer comeback service/problems because it costs them time and money, then you can feel confident that it's an OK way to approach it.