56 Olds wiring help

I'm looking to replace the wiring in my 56 olds 88. I was thinking of going with Ezwire kit part # EZ21 http://ezwiring.com/wiring_harness.html . wanted some input on it . I was also thinking of going with one of there headlight switches from them. Anybody know if the switch will fit right in the Olds dash ?. Any input or recommendations would be a great help.
Thanks...

 

Do you have your original switch? I used the original on my 50 Chevy when I rewired it and it was fine. Todd

 

I do have it. I didn't know if it would work or not with the new wiring