I need to replace the rear brakes on my 1973 wagon. While looking for parts, I found three different widths. The drums are all 9" diameter, but shoes are listed as 1.50", 1.75", and 1.82". Does anyone know which ones the wagon would have? I was told it should be the 1.82, but that is unverified. They also seem to be very hard to find. I would like to order the parts before taking anything apart, because I currently have to park this car on the street, and will have to use someone else's property to work on it. Thanks.