I'm assuming it still has a 400SB in it, right? If it still has the stock ignition, the plugs need to be gapped at .035. You could have a 2bbl or 4bbl carb, so depending on if the car fouls the plugs from running rich, you may want to use a Bosch Platinum plug with the extended nsulator on the electrode. The plug reaches self-cleaning temperature instantly and burns off carbon quickly. If the plugs don't get sooty and fouled, go with a regular copper plug, in your choice of brand. I use Denso in my Valiant, but I've also used Bosch Super and Champion.

You need to put about a teaspoon of oil in each spark plug hole when you install the plugs, drain the engine oil and replace with fresh 5w-30 oil(only for the initial startup, replace with 10w-30 or 10w-40 later), drain the gas tank and add fresh gas, drain the float bowls on the carburetors, replace the fuel filter, disconnect the coil wire and turn the car over a few times to get some oil circulating, then pour fresh gas down the throat of the carb, and fire it up.

Make sure you have a battery charger hooked up because it'll probably take a few tries to get it started.

Replace all other fluids ASAP, including differential oil, trans fluid, coolant, brake fluid, and lube the chassis.

 

Thanks a lot Drew, I figured you'd come through. You my friend, are a car god. Thanks again.