265's in a 65 Cuda, yup it fits

I just tried a 265 40R17 on my 65 Cuda, and it fits in the stock wheel well with no rubbing, however I havn't driven the car. I jacked it up on all angles and put a ton of weight in the trunk to get them to make contact with the body but no way. The wheel wells are all stock with the springs moved in and the rear end set back 3/4 of an inch to centre the wheel in the wheel well.
The trick seems to be to get the right offset, my rear rims are +24mm with a 5.95 back space. On the front I have 215 45 17's. Rear rims are 17 X 9, and front 17 X 8.

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