Does the 71-72 up dart with 10" drum front brake have the master cyl like a disc drum car with the two different size reservoirs ? I`m asking as that was what was on the car when I got it so figured some one switched. So I order a Centric 10" drum front non power and got the same thing as what was on the car. Looks like disc/ drum combo @ rock auto{picts } other manufactures seem to portrait the same. The 1970 is different.??????

This is of no interest to the resto guys ?? There seems to be a mystry in the fact same part number gives two differnt style master cylinders in 71 {first year for bale and 1" 1/32 piston. Google master cylinder 3461184 you`ll see NOS versions of both styles same # . My main concern is which one will work with my existing distribution and proportiong valves ?????? As they do not look like the valve{distribuion block only } for my 71 front 11" drum challenger RT which has the manual master { same size reservoirs} ??

from what I know from my 72 dart, it is post to have same size on both for 10" drum on drum non power & lookin at pics of untouch low miles darts its what I see with all drums!...& advance auto do not carry them no more, it shows a pic of one on thear pc, but thats not what you get, they give ya the one with two deff sizes, but ther are some on ebay thats right, because thats wear I had to wind up getting me one from!