My wife put a Car-done rebuilt rack on her '96. And after only 40K miles it started feeling strange and puking oil out of the ends.
It is a PITA to swap a rack, especially if you have to take the HD skids off first, saving a few hundred doesn't really make up for needing to do it again so soon. When the Cardone rack failed she got a brand new OEM rack, it should last for 180K like the first one did. She put an inline filter on the return as well, to help make sure that junk wasn't floating around in the system and causing the rack to fail.
My 99's rack started to feel loose twice so far. First time I replaced all the rubber bushings, because wiggling the steering wheel showed the whole rack moving around. 20, 30K miles later it started to feel a little loose again, this time the driver's side inner tie rod was wiggling up and down a little, but some research showed that the roller guides used in later racks wear and cause that slop, bought a replacement solid guide and installed it and it's still going strong at 219K miles.