Just recently installed an EZ kit, i was impressed with the ease of fitting.
Like Boltbuster mentions,its well marked.
I had to make a small adjustment for the rear lights/turn signals due to UK law but other than that it was EZ!
I used New Vintage gauges,and apart from a small error on my part now work perfectly.

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.