You are in the Saint Louis area. Cars there rust into the ground over time. Before you expend a lot of time and funds get the car up off the ground and inspect the frame and metal parts for rust. The car could be terminal but look ok because of the fiberglass body. Also, generally there is always a reason why a car sat for years, and that is for you to find out.
Start with getting the engine running, the entire fuel system must be flushed from the tank to the carb and usually the carb needs to be redone or replaced for a car that has been sitting for years. Fuel tank is often rusted out because water is heavier than gas and any moisture in the tank will rust it out over time. Replace the oil and filter and coolent. Now try to start the engine, if it runs ok you can do the hoses and other stuff later. After getting the engine running ok the entire brake system will have to be flushed and gone thru before driving the car for obvious reasons.....Engine running ok, brakes working, check the tranny and rear end fluids and top up as necessary. Now you can attempt to drive the car and it should be safe arround the block. If the drive train is working ok you are lucky and can now go thru and do the rest of the fluid flushes, hoses, belts, tires and all the other small but expensive stuff necessary to make it a reliable car. If a major component is terminal you will have discovered why the car was originally parked during this process. Be sure and inspect the frame first.........good luck.