Suspension> rear end rebuild.

Hey good people, just here to update you all on my 73 fury. I already finished rebuilding the front end and everything went smooth. Thank you all so much for your great help. Now I am working on the rear end and I have a question concerning the rims, what size of the rims should I use to make rear tyres wider/thicker and still able to keep the poverty caps on them wider rims? Originally the car has its R15×5.5 rims and 235/70R15 tyres

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