quick b-body control arm question

What years of control arms will interchange with/into a 66 Charger? I ask because we have a set of 68 road runner lower control arms that are available but I wasn't for sure if in 68 the body style was the only thing to change or if they changed anything in the suspension components too.

So anybody know what lower control arm years I can use for this 66 Charger?

Thanks, btw the only reason I didn't post this in the susp section is because It wasn't A-body specific.