Mitch is right, you can get the X-3 with custom tunes to do what you want.
The W/M injectors are based on the HP output of your motor. So if your buddies kit has too large or too small of injectors, you will need to buy the right size injectors for your motor hp output.
When I broke one of my injectors at the push to connect elbow, I called snow performance about buying a new injector. The price was $80 for one injector. Well since I'm a machinist, I removed the 1/8npt nozzle and made a solid connect elbow.
The moral of that story is, if your gonna need larger/smaller injectors, you better figure in the price of them also.