[Chevelle-list] brake master cylinder

[Peebles, Lorne (Services)]

I want to replace my master cylinder on my 66 Chevelle. All reference
material to the car and year points me to a single reservoir unit. I
currently have a dual unit installed but it is very tired and looks
crappy. My question is will any dual master cylinder work or is there a
specific model I should be looking for. Thanks