I currently have a crane HI-6 on my turbo mustang. I love it, and will be upgrading to thier model with 2 stage rev limiter so I can use it as a 2 step to build boost on the starting line. I plan to move my current one over to the Dart when the time comes.
Pretty straight forward install. It should just plug in before the coil than plug it to the coil. Than of course you will need to connect the power, ground and what ever else extras you plan to use.
Here is a link to the instruction manual for all HI-6's, page 4 has a picture.
[ame]http://www.sportcompactonly.com/manuals/Brand/Crane%20Cams/90006000d.pdf[/ame]