Ive got a 1999 Z28.

The previous owner already swapped the LS6 intake.

Well I just bought a Set of 243 casting (livernois Ls2/ls6 Heads)

Is there a full gasket kit I can order?

Which Head bolts do I use? 1999 Ls1 head Bolts or 2004+ ls2 head bolts?

 

LS1 bolts. I think You just need head gaskets, intake gaskets, and exhaust manifold gaskets. SDPC has them and so do other sponsors.

 

You will most likely be able to reuse your exhaust manifold gaskets and intake gaskets unless they are damaged. You will need to use the 1999 bolts for the heads.