I need to replace a Jandy 1.5 single phase pump with a variable pump.  I have 120v and do not want to do 220v rewiring.

I am looking at the Pentair 342001 Super Flo as a possiblity, but  a pool guy told me that this would involve a lot of expense in major pumbing to replace the Jandy with this Pentair.

Can anyone give me some feedback as to the validity in this statement.  I want to get going on this before too long.

If this is true, is there any other variable speed that is 120v that I can get as the replacement if the Pentair 342001 will not work?

Thanks for your help.