Actually if you want to skip the inevitable repair go ahead and order it.
I have found it's much easier to change at home or in your own shop than when it goes out on the road when you least expect it.
I am not sure what Cruzin meant by his remark that with out the larger intercooler it wont make a difference? The size of the heat exchanger has no barring on whether or not the pump will go out or not?
There is no question that the "Johnson" pump is far better than the stock M/B pump.
Enjoy the Ride...
Mike