Metric Saginaw is pretty much Metric Saginaw - it's a GM pump that is also used by Chryco. In fact, I think even the Viper pump fits (I know they use the same caps - from experience...)
Look at about any late-model GM or Chrysler, 1985 and up, and you should find a Metric Saginaw pump. You can probably pull one from any XJ/MJ up to at leasst 1996 (probably all of them, I think they just changed the mounting for 1999-up) any ZJ, and probably any TJ/WJ as well.
Saginaw didn't change the pumps much over the last forty years or so - there are just two basic versions (inch and metric) and a couple "upsizes" for larger or special applications.
5-90