I've posted elsewhere that I am getting back to my cars after a hiatus raising children (they're still in the house, just not quite as labor-intensive as those first years!), and I bought a 1969 Skylark convertible last month. I have spent this month working on it, and I have been glad to gradually work my way through my own stockpile of parts accumulated over the seasons for my various cars. Onto the question: I ordered from eBay a while back a power brake booster (with the D-M stamp) for my 1972 GS, but I was going to go ahead and use it for this '69, since its need is more immediate. When I checked the box (see picture of label below) I noticed that the sticker reports, "1964-1966 9" Single Power Brake Booster." Please see below the pictures I posted of this part. Can anyone tell if the label is correct? If so, does it interchange? The '69 I'm working has four-wheel drum brakes. Thanks for the help!
