compatiibility

Hi there, I am looking to replace an old Pegasus 1000 Series Shower (813-936G) that includes Tub spout W/O diverter, Shower valve with Diverter, and Trim. I am not the original homeowner. Through contacting Danze/Globe Union, I was able to find out the brand and model of this shower and even was...

My best to all, I need to replace this old hardware. Will current Pfister hardware or Danco hardware fit or have they changed something in their basic design that precludes the use of current Pfister/Danco parts. Also, is there another companies product that will work? I would greatly...