Read through this: http://community.rukind.com/viewtopic.php?f=419&t=10215 There are several posts concerning the input jacks etc.
I removed mine by carefully prying the retainer rings off the back of the inputs and removing them with plyers. Then I drilled the holes slightly bigger to the appropriate size and installed the 1/4" input jacks. Very easy.
As far as the speaker outputs go, it nice to have the choice of different ohm outputs, so left the speaker output strip as is.