Aluminum Master with rear drums

my understanding is that the newer car have a different type of rear wheel cyl. that does not require a residual valve so i was wondering what everyone has done and how it worked out.
Your understanding is correct, and it is easy enough to check the wheel cylinders on Your car, pop the drums and push the pistons in w/a blunt screwdriver. If they want to
push back out as soon as you let up, Your good, if not and/or went in really tight....it's time for new ones anyway. As far as cirrus/stratus/breeze inline jobs, forget snagging
used ones, most of the time the nuts pull the threads taking them apart. And they're old by now, and have sprung leaks only 5yrs. old, I would consider new ones only.
Do not fear the bubble flare!Lol! They are easy to form, seal fine, & the correct line nuts are readily available. I have a couple FSM's stating that all dual tandem masters
on passenger cars/light trucks except some 1ton models have no RCV's and expanders in the WC's on Chrysler products, but I would give the RamMan or like person a call
to verify this to be fact.