Ken, this might help on the hose routing and general info for the AC system:
http://www.1968firebird.org/illustrated/heatair/air1.html

I've only seen one intact Cruise control system and I have a picture I can send you. (actually, I have it online:
http://pg.photos.yahoo.com/ph/brettliukkonen/detail?.dir=3ea4&.dnm=c5c6.jpg&.src=ph ) But here's again some info from the service manual:
http://www.1968firebird.org/illustrated/cruise/cruise1.html

If you haven't yet bookmarked Steve's site, please do, as it's an invaluable resource! Hope this info helps.

I took measurements at one point, but pictures of them didn't turn out great and I'm going to have to redo the info soon and get that out to a few people!

Brett - 67 Drop Top 455!