resq45

I acquired a spa that needs a TLC work. It is an old Blue Ridge Spa and I need to change out the control board. I am a newbie spa owner so forgive me if my questions is either vague or does not make sense. Currently is has a 2 speed main pump, then a recirculating pump with a low flow heater, which the recirculating pump and heater do not work and need to be changed out. If I get a Spa Pack that has everything, lets say for example the SmarTouch 1000, can I just remove the low flow heater and rock on with the pack? They really don't make the components that I need if I wanted to do an exact retrofit. Help is appreciated. Thanks!