I'm finding it hard to follow this thread and current desire of the OP. Replace motor, replace pump, replace pump and filter?

The cheapest solution is to replace the motor on your current pump. You should be able cross reference the motor number.

If you plan on the replacing the entire pump, then in order to recommend the correct size, I need to know the size of your current filter.

If you plan on replacing both the filter and pump, the I would recommend the Pentair PNSD0060DO2260 or PNSD0060DP2160 depending on the plug type you have.