Spare tire size?

easyrider, Check out the photos.
I found these spares in late 80's RWD Chrysler 5th Ave and Diplomats(Grand Furys) 4 1/2 bolt pattern, fits disc brakes and gives you a nice flat floor.$10 bucks at the wrecking yard.Even gives you room for spare parts down there.The photos are from my 63 Valiant.