Reinstall intake manifold

[Roughgem]

1995 SVX L with AWD. Bought it from a guy who had it sitting for long periods at this home in the country. Had quite a few wires eaten through by mice. After what I saw were repaired, the check engine light was still on. In evaluating things I discovered a wiring connecter under and in front of the throttle body that was chewed close to the connecter. Well......I finally figured out that the manifold had to come off. So all wiring (found three other problems also) is fixed. Ready to reinstall the manifold.....but was wondering if I needed to put some type of gasket sealer on the surface of the manifold prior to reinstall.
Thanks for taking the time to respond.
David