Well, If you'd like to reseal the intake, the carb is off. Not too hard of a deal.
This is how I would do it.
Turn the motor over to the timing mark & watch the Ignition rotor to be pointing to #1. You might need to bring the motor over twice since the rotor only spins once per two revolutions of the crank.
Mark the distributor where it touches the intake so you can reset the timing where it was on reinstall. Mark it where the rotor was pointing too.
Disconnect the wires to the distributor, oil pressure sensor and coolant temp sender.
Unbolt the distributor and remove. Unbolt the thermostat housing. Unbolt the intake and remove it, you will probably need to gently pry a couple of corners to loosen the gaskets & cement.
Plug the holes in the heads with rags or paper towels so no foreign stuff can go in there. Lay some cloth or rags in the valley so nothing can go in there too. Maybe the best thing would be to clean below the intake ports with solvent so you can stick tape there to make a good catcher for gasket debris. Then clean off any old gasket material from the heads and the intake.
Now is a good time to clean up and sand the intake if you are going to paint it.
Install the new gaskets, I would use a little Perfect Seal to hold them in place, then do a bead of rtv along the front & rear rails. Place the intake very straight down in it's spot and start the bolts. Don't snug them down yet. Allow the sealer to cure some. Snug them later or the next day.
Reinstall the other stuff the way it was.
