Two thing ar important weight and where the weight is. Assume the alternator wieghs 10 pounds and you move it 8 feet aft and 2 feet lower than its stock position at the top front of the engine. By doing this you improve fore/aft weight distribution improving chassis ballance and possibly lowering your polar moment of inertia improving turn in quickness. You have also lowered the center of gravity by moving the alterntor from the top of the engine down to the axle level (or lower GULP).