I decided that there are better options than the hand held shower in our IH-45. So a diverter valve, some stainless steel pipe and fittings and a rain shower head, with a couple of hours work.
Diverter Valve:

Diverter Valve 2:

Completed Shower:

Yea Rainshower!!:

Turn shower on normally, move diverter valve up for rain shower only, down for original hand shower, middle position for both.