Replacing inground pool pump

I am interested in buying a variable speed pool pump. I am having a hard time with picking right brand and HP.

I just bought the house and pool. It currently has a Hayward 1.5hp super pump single speed. Inlet is 1.5" to pump. 2" discharge from pump through filter and heater after salt clorinator it goes back to 1.5".

The pool is 39,000gal, 4,875gph, 81.25gpm. I tried to figure out the head but everything is buried. I also dont have any diagrams of piping.

Any help would be awesome. Thanks…

Thank you for contacting Inyo. We’d recommend the PureLine Prime model PL2605. The PL2605 is a 1.65HP variable speed pump. This pump would be suitable for your application.