Boxhead...I used a Painless 12 circuit universal harness and it meet all my expectations. You would maybe use the GM universal one depending on what connectors are on your ignition/indicator stalk.
The fuse box had a few unfused power circuits if you required more. Even the radio circuit had both switched and unswitched circuits for radios to keep their memory settings when the ignition is off.
It also had a 4 wheel drive switch circuit I didn't use and could be used for something else.
It also had an aircon power circuit I didn't use.
The only thing I would do differently would be to also purchase the Gauge wiring harness rather than wire all the gauges myself.
These are the gauge harnesses:
http://www.painlesswiring.com/catalogframe.htm
and go to connectors and pigtails.
Hope this helps.
Cheers