There is relatively small chance a Terminator will develop the tick issue. But it has, does, and will happen. Jimmy makes some excellent points above, so the bottom line is it is a cheap insurance. Will it guarantee you'll never get the tick issue? No. But odds are it should do the trick since it does move more coolant through the head. Obviously the best option is to go with the 01/2005 heads. If I was using the car strictly as a street ride with little if any racing, I probably wouldn't bother. If, however, I was pulling the blower for porting or a T/S I would do the mod.
Call Jared at Lethal Performance and he'll hook you up with the Evans Gen II cooling mod.
Call Jared at Lethal Performance and he'll hook you up with the Evans Gen II cooling mod.