318 vs 360 weight

Thanks to the VIN decoder on this site I figured out that my new Scamp was born with a 318. I have a 360 to put in it. Is there any weight difference between the two engines? I'm trying to figure out if I need to change the torsion bars when I drop the 360 in.
pretty sure you will be ok with the ones you have unless you are building a race motor. I still have the 6 cylinder ones in my car. Some racers even prefer the lighter bar, not sure why.