5 lbs is 5 lbs...it's almost insignificant but combined with other small decreases in weight it will add up and help...also with all the lines out it makes accessing the engine much easier

don't forget the a/c radiator and fan too...they add some weight...when i took mine out i got near 60lbs (bathroom scale)...but i stripped the engine bay clean of whatever else was in there that i didn't need...i also took a bunch of stuff out of the interior that was connected to the a/c system