Well as it turns out the upgrade can not be used for the MP20. DR. Fosters and Smith have modified the web site to tell you what wasn't there before.
Does not include Power Supply
A critical piece of information considering they do not sell the power supply and it is $50.00 through EcoTech.
I talked to EcoTech first and they have already informed Dr. Foster and Smith about the error but Dr. Foster and Smith are still listing it as an upgrade to the MP20. The MP20 power supply will not work with the MP40W driver.
So anyway Dr.'s Foster and Smith are issuing me a full credit and paying to have it shipped back to them so now I'm back to just the MP20 which is been working perfectly for me.