You can go with his system, and for most people it will work out. However, his theory of why it works is not entirely correct. This why for many years his stuff didn't always work with vac advance. I've tried to discuss that with him here but he always disappears.
The idea that GM did not use vacuum advance in the pre-emissions era is hogwash as can be seen by looking at some pre-68 high performance Chevy engines.
