How many miles??
If you
REALLY want to be 'proactive', remove the calipers and clean/re-lube them up. Pop the pistons out (compressed air) ..using blocks of wood to gradually work the pistons out in steps ...don't just blow the pistons out or they'll shoot out like a bullet and crack & chip ..and damage the dust boot. Work them out slowly. Then clean any gunk out of the caliper bores, re-lube the pistons/seals. Just re-use the seals, put everything back together...shouldnt need to buy new parts.
Your calipers might look rusty as heck on the outside, but they may be clean as day-two on the inside. So, if you lube them up, lube all the sliding parts incl sliding pins (and file rust away from sliding surfaces), you might be able to go may yrs w/o having sticky calipers that hang up and warp your new rotors. Save yourself a few hundred bucks. Just get a piece of rubber inner tube 1" wide, 2" long and
attach a C-clamp vise grips on the hose end to keep brake fluid from dripping out. My truck has been sitting like that for a month and hasn't leaked a drop of brake fluid. Then you can work on the calipers.
The ONE THING you might want to do is inspect for rust on the inner-ring of the dust boot at the top of the caliper bore (see pic below). What happens is rust starts there and gradually 'creeps' it's way into the bore. Builds up (expands) and makes the piston harder to retract. Leading to possibly warped rotors. Below you can see I'm blasting that rust out, but you could clean it out with sandpaper as best you could and that would make a positive impact I believe. The rest of the bore on mine looked brand new inside.
As I say, a guy can generally reuse the existing brake parts w/o buying anything new. But Mopar does sell OEM (TRW) piston kits if you need them. OR, ...when the time comes buy brand new calipers. I would avoid rebuilt calipers. Rebuilt calipers generally the rebuild outfit blasts the inside of the piston bores (which destroys the bore finish), and use the cheapest parts. Be lucky to get a couple yrs on a reblt caliper. Advance Auto has really nice NEW (oem like quality) calipers. And some others on RockAuto and Amazon are good as well. To me, it's fun to re-do them (I'm whacko that way!). Suck out the old fluid from your reservoir and put in new. Bleed front & back brakes out.
Don't forget to check your tk's lower ball joints too...they tend to go quicker than the rest.
...after blasting & self-etch primer ...and paint.
