Do new aftermarket ignition switches work?

Oh something to watch for is 68 or 9 and up have a seperate parking light cir so the front parking lights come on while the headlight are on ( or something like that) where as 67 did not. Also @Mattax ( I think) noted that later models have a built in cir breaker with a higher amp rating ( or something like that)

I know a bit wishy washy