Iwaki Pump Question.

[Supernova26]

Hello,

I just purchased a used Iwaki MD-70RLZT when I thought i was buying a MD-70RLT. The RLZT is a high head pressure pump and is rated 700GPH at 66' . I really like the pump but I want a little more GHP and I don't care as much about high head. The motors for both pumps are similar (2/7HP vs 1/4HP both at 3400RPM) and they have the same dimensions. Does anyone know if I can change the housing and impeller of the RLZT with the one from the RLT? Also where is the best place to get Iwaki parts?

Thank You