H/C gaskets
This is what I used comes with:
This comprehensive cylinder head installation kit is for Camaro and
Firebird models equipped with the LS1 engine. The kit includes two
head gaskets, two valve cover gaskets, eight intake manifold
gaskets, two exhaust manifold gaskets, two intake-to-block seals
and 30 head bolts.
It worked good for me.
Some folks say the front cover gasket is re-usable, but I replaced mine while I was at it. Definitely need to replace the front seal.

