if you're looking to add to the VX dash here's a pic of the Holden rodeo dash, showing buttons and cruise control..


but apparently the Rodeo cruise isn't as easy a reinstall onto the VX but ..these guys do a nice install [thanks OZVX of this cruise control..which includes 3 different speed alert settings [eg 60, 80 and say 110kph] ..as well as cruise..pic is of MX5, the guy suggested to me this as an example of how their controls clip to the steering wheel...not cheap ..~$850AUD, but is more than just cruise..buttons are not illuminated ....its around $150 less sans speed alerts

http://www.autron.com.au/newweb/index800.htm