Ignition switch question...Need help!

[ABX131]

My son and I have finally gotten around to removing the late model Impala steering column from our 63'. We are replacing it with a column from a 71' my buddy gave me. This is moving the ignition key back to its stock location. I have a stock switch but have run in to a problem. The PO replaced the entire wiring harness with an aftermarket unit which included an accessories setting on the Impala column but my stock switch has no accessories setting, leaving me with an extra wire to the switch. Is there GM switch that will fit the stock opening in the dash, not the column, that has an accessories setting to make my situation a non issue?