I’m assuming that by “natural draft style vented system” you mean a draft hood, correct?
Unfortunately the answer is no. Natural draft type, draft hood equipped water heater cannot be transformed into a power vent operated water heater unless this particular appliance has been listed / approved by its manufacturer for such ventilation type.
To be absolutely sure you can simply check the installation manual, GE website, or call one of their technicians and ask about your particular model. However, if it is a natural draft type water heater
, it requires a chimney to discharge exhaust gasses to exterior.
There is a difference in design of a natural draft water heater and attaching an induced draft motor to it can compromise proper combustion, burner operation, and even cause Carbon Monoxide poisoning.