automatic pistol grip shifter

Hey, I noticed on the Gunslinger web site that they have a shift handle for a '70 and one for '71-'74.
Also says in '74 Mopar change back to '70 style.
The one I'm selling is for a '70. No ideas if that is a problem for the other years or not. Looks like some years had a longer handle. I would think the bolt thread on the shifter shaft is the same year to year. So, mine should thread on. Might wanna call Gunslinger to see what their difference is. IDK, up to you.