Duster Brake ID

[MR4V]

Can anyone identify these brakes? I'm after a new master cylinder & I'm having trouble getting the part number so I can order it from Rock Auto.

This is the part number I think it is.
http://www.rockauto.com/catalog/x,carcode,1232019,parttype,1836

 

[Jim Lusk]

Pull a rear drum and measure whether they are 9" or 10".

 

[MR4V]

Pull a rear drum and measure whether they are 9" or 10".

Yep they are 10" rear, so dose that mean that I need Centric Part Number 13063018,Wagner Part Number MC79772 or Wagner Part Number MC83578?
Thanks

 

[red_duster74]

they have to be 10" in the front as well because only the 10" has a dual finned design the 9" only has one set of fins

 

[MR4V]

they have to be 10" in the front as well because only the 10" has a dual finned design the 9" only has one set of fins

The front finned brakes have 10.9 on them so aren't they 11"?
I just want to order the right master cylinder as it's a long way to post back.

 

[Blue Grey Duster]

What year Duster and engine size, do you have ? From the looks of your 8 3/4, it's a 340 car !
From what I've read on this site before, they say, don't buy rebuilt.

 

[MR4V]

What year Duster and engine size, do you have ? From the looks of your 8 3/4, it's a 340 car !
From what I've read on this site before, they say, don't buy rebuilt.

1973 340 Duster. Why buy rebuilt when for a few dollars more you can get new replacement parts.

Later in the year I will replace the whole front end & do a Wilwood upgrade, the only thing then is do I keep it SBP or go LBP.
At the moment it has Ralleys which I want to keep.

 

[green1]

Get a tape measure.

 

[red_duster74]

The front finned brakes have 10.9 on them so aren't they 11"?
I just want to order the right master cylinder as it's a long way to post back.

well i have the same brakes on my duster and they are 10in. and yeah mine say 10.09 maximum diameter as well