Oh, God! I just remembered...
Back in High School when I had my first '69 Mustang, I took some windshield washer squirters from an old Ford van (they stood "proud" of the sheetmetal about an inch or so), and I mounted them on the vertical sheetmetal lip formed by the inner and outer rear quarters, and aimed at the front of the rear tires. With a washer reservoir in the trunk filled with bleach, and a momentray button laying on the floor under the seat....
Even an 8" "one wheel wonder", and an anemic 289-2V, will spin them both if properly....uh....motivated!
Good times!