Yes, that is correct. Side pipes would MELT them, even if you could find someway to attach them.
Plug the pipes with tennis ***** or something to keep the rodents out, put some moth ***** under the hood for the same reason.
If you can, put it on stands with the tires off the ground.
A good battery maintainer helps too, start it and run it at least once a month until it is warmed up.