So I am diving into the power brake booster/master cylinder on the New Yorker. Previous owner added a dual master which I like but the cylinder and booster does not move at all. I do not know if it is the original booster. the number I found on it is 18268. Looks to be a bendix. Plastic pieces are broken up. If I un-twist it I would want to put new parts in it. So a rebuild kit? who? Master cylinder is no problem. or a new booster. Ebay has them for a/b/e bodies and c-bodies 66 and up. Do not want to drill holes in the fire wall to make something "fit". Thanks.