Go new. Remans never last long. These PS pump put out 1500Lbs of pressure and if the seals dont seat right, it will fail again. But whatever you decide, add a magnefine 3/8” inline filter on the return line to clean any remaining debris in the fluid. Once the pump fails, its impossible to flush out the crap that made the first pump fail.
I have been using it on mine since I bought it with 96,000 miles on the clock. I am at 285,000 miles on the original rack and pump. Still tight as new. I also flush the PS fluid every 100,000 miles or sooner.