Cobra Brake Parts or Axle

Missing Brake Parts on Cobra Trailer

My brakes have not worked on my Cobra trailer since I purchased it. It is
probably 10 years old. I finally pulled the drums off and found all the
internal parts missing. I assume that a previous owner went joy riding with
the brake lever on. The brakes were probably burned up and then removed. I
have no brake parts and corroded drums. I am looking for recommendations. Do
I purchase parts and new drums or consider hanging a new axle with brakes
under the trailer. Does anyone in the US still make axles with mechanical
brakes? Should I convert the whole thing (axle and tongue) to hydraulic?
Anyone every tackled this successfully?

Thanks

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