I've owned my 93 Dakota since 1993. It now has 300k miles on it. The brakes are well maintained and in very good condition.
They are not adequate for the Dakota. They are not good brakes. I don't think they will bring any big block C body down from 80 very well, at all.
I would not use Dakota brakes on a big Chrysler.
The 93 Dakota uses an ingenious brake unloader for empty bed loads that increases the rear braking when the bed is loaded. The rear brakes apply a "lot" more braking force when loaded than any C body would ever apply. The C body rear brakes would never even come close. It's a very good system that accommodates the marginal Dakota front brakes.
The Dakota brakes would be fine for tooling around town.
You will be attending to the cheap disc every 20k miles, or less. Unless you have the "original factory disc" that came on the truck. Not China, not new Dodge. The "ones" that the truck was "delivered" with. The are good for about three cuts and 120k miles.
That's if you don't descend any long 5% grades towing 3k pounds and no trailer brakes. One long 7% grade with a 5000-pound trailer and no trailer brakes and the disc will be "completely" roasted, warp city. Unless you start at the top in first gear with a 3.91 rear gear.
This trailer has electric brakes independent of each other with three separate brake controllers "and" power supplies on all three axles that can be locked up at 60. They can stop the Dakota whether it wants to stop or not. It tows the motor grader at 55 just fine.
Without that trailer the Dakota couldn't even tow and stop another Dakota on a tow dolly.