Anyone used this Master Cylinder? SSBC A28151

I just put front discs on my 68 barracuda and need a new master cylinder. Found this SSBC master and booster on amazon but the picture on amazon shows it is for front disc/rear drum, and does not say in the description if it is disc/ drum or drum/drum.So i typed the PN in google and found it on Summit and SSBC, which do not state whether it is disc/drum or drum/drum!!!! It is only $150 on amazon right now and like $350 on summit so I want to buy it but I dont know if itll fit!!! anyone happen to know??