79 integrated exhaust manifold gasket replacement

[demian5]

Anyone have any experience replacing one of these? Its a single BBL carb. The motor is installed in a 1969 though so I think we will make a block-off plate for the passages under the carb while we have it off.

Plan is to soak bolts with PB blaster for a week or so and try and break free while engine is on a cooling cycle after being driven.

Any insight as to what to expect, is awesome (remove this, plan on replacing that, your screwed if xxxxxx happens...)