I did a 91 SN with Shopline JAU top deck and some various parts with a quart of base and a quart of clear, Properly reduced, will yield two quarts for both base and clear. I got to spray on about 3 coats of base and clear as well.
I would say if you can get little more than a quart like a quart and a half or even just 40oz for both base and top coat, that would be perfect since you will be using a primer or a sealer.