You called
You have good equipment in your signature. A 2 speed pump will work great and a 300 pound sand filter will also work just fine... the pipe will clean out once you run it with chlorine after a couple hours..
If you keep the pump you can get a pump rebuild kit with new salt or SCS seals if it it leaking after you start it up..
If the liner is still good and holding water there is no need to get a new one.. Just pay 2 to 3 teenagers 100 dollars a piece to empty the pool and get all the junk out..
Fill up the pool
Deep clean the sand filter
and fire up the pump..
SLAM from there..
This will cost you chlorine and teenagers off from school manual labor and a new test kit... Maybe 500 dollars for everything
If you really want a new motor to connect to your pump we can go there..