'69 Dart - Head Bolts

It is very much worth your while to get the good gaskets for the manifolds-to-head and intake-to-exhaust junctions.
Ouch, those will only come the day I leave.
Can I just use sealant as you mentioned here with the de-bridged FelPro inter-manifold gasket and FelPro manifolds-to-head gasket instead, or was sealant a given even with the better gaskets?