Sorry, haven't had a lot of time today. I would get a Custom Trucks or Classic Custom Trucks type of magazine and look through all of the different vendors listed and contact the ones that apply. Painless and Ron Frances are top notch wiring companies, there's several more.
On the front suspension swap, a 90 'burb or truck would not be a good choice. You'll need something pre '88. The front end from 88 and up are integrated into the frame and won't unbolt and swap over to your frame. Stick with the '72 - '87 era trucks for an easier swap.
That's just my opinion, others may vary,
Scott
