Cruiser outfitters is a no-brainer on this one, imho. Extremely competitive prices and incredible customer service.
Paper towels, and more paper towels, then get some more. And just when you think you've got too many, grab one more roll. I put my '80 up on stands and then put painters plastic down on the garage floor underneath the entire front of the cruiser. Then when I was done I just rolled the plastic up with all of the trash and nastiness in it and threw it in the garbage.
I also did my birf's at the same time, and kept a bucket of gas and threw parts in there to clean then up.