Bob Broberg and a few other guys at John's asked about the cruise control I added this summer. It is the Audiovox CCS-100 kit that sells for about $99 from several online companies - JCWhitney, Amazon, etc. From the Audiovox site, click on Find Manual to download a PDF.
http://www.audiovox.com/webapp/wcs/s...1067&langId=-1
It was tough to add it to my modular 4.6 but is much easier to add to a (primitive) push rod engine that has only one coil. If you don't have a VSS signal the kit includes everything for a magnetic pickup on the drive shaft. It also includes lots of parts to connect to various throttle designs. Small (1.5" x 2") control on dash, 3" round vacuum servo in engine compartment, connect to brake light switch, connect to vacuum, dash lights, etc.