If you try and put meats on the back, they may possibly fit per the fitment jig but you wont be able to put them on! remember you have to get the tire up into the well, then OVER the studs (long studs will hurt here), and then bolted up. I just put 235-75R15's on the back of my 65 with a 8.75 rear (wanted a taller tire) and they clear with millimeters at the leaf and the front part of the rocker trim piece. And they were difficult getting on for the fact that they are so tight up in the well when mounting. Screw in lug bolts would be great here.
235/75R15
Diameter : 28.9"
Width : 9.3"
Wheel : 15" x 6-8"
Sidewall : 6.9"
Circum. : 90.7"
Revs/Mile : 699