[Dragsinger]

Chris,

you can cut/grind the rivet head off and punch it through the hub. [if drum replacement is required] in the "olden days" we did it regularly. Of course, there is no need to reinstall the rivets.

Here are a few things that will improver those brakes, however, as mentioned above, they are only "fair" at best.

Make sure the drums are not excessively over size. If memory serves me correctly, those brakes are 11" X 2" If the drums are more than 11.030 - 11.040 you loose the natural cam/self energizing action. Also, a premium riveted brake lining set will help. Plus, be sure to either replace or re-kit the wheel cylinders. And, do not neglect the rear brakes, just as important for them to be up-to-speed [so to speak]