It won't sit as low due to the obvious weight difference of the motors. I would assume ride and handling would be affected, also. Here's the correct part #'s for our cars........................
I put on the 5.0 springs and it lowered the car in the rear, since the K member is different on the 4 banger the aftermarket springs are actually taller than the 5.0 lowering springs so I wound up with a ghetto cruiser, with the front 2 inches higher and the back 2 inches lower, looked hillarious. So get some 4 banger lowering springs, lol!