rear w-cylinder size options - complete front power disc conversion done

[sideline]

66' coronet 440 with fresh brake kit install from pedal out....(pretty happy with p-jack kit)... 12" disc's, disc/drum-master, portioning valve,bendx power-booster and lines installed...

(Rear brakes kept as oe. drum). I'm changing out the rear slaves to new while i have it apart.

,.keep the same oe size or bore size change is my question? side note- new 3/16 line run front/rear.
i realize there are sizing options and would like to here any results kindly.
thanks in advance!

 

[hunt2elk]

When I do a front disc conversion I swap the factory 15/16 rear cylinders for 7/8". Cass at Dr Diff claims this helps prevent rear wheel lockup. I have some 7/8" cylinders for sale if you go that route.....