In Case You Missed It
Firewall Forward: Installing the Firewall
Author Dave Prizio describes construction of the firewall itself, including the penetrations and the tools required.
The Effects of Ignition Advance on Cylinder Head Temperature, Speed, and Efficiency
If a little is good, more is better, and too much should be just about right. Not!
Orphan Part Angel
The Glasair static port design has a beveled segment that bisects the centerline of the port. This adds more than a minor complication to the machining process.