About the ign switch deal I mentioned. I can't recall when Chrysler changed the ign switch plug and setup, but while at least up to 74 was used this
On laters ( 75? 76? 77? ), the plug used was this
When not just the plug but also the wiring and the power distribution also changed. So even if the column physically fits ( which I think it does ) you will need to reuse your ign switch