Brake dragging on passenger side,advice/help needed

Personally at this point I'd replace BOTH. It might be one is braking harder than it should and the other sticking. IS IT POSSIBLE they are different bore size? I forget "what that is" Volare? That is, there is a later application calipers you can use, larger bores, will give harder braking, but of course you must have BOTH of one size or the other (Measure the pistons)