1 speed upgrade to 2 speed

looking to upgrade from 1 speed to 2 speed

Currently running 2 x Hayward pumps with Century Motors SP3007EEAZ A,  3/4 hp,  1 1/2" pipe,  220v CT

1072 with 56J Flange.

I need 2 motors OR if you have a real deal I will buy 2 new complete pumps; Hayward, Jandy, Pentair etc