Biggest wheel on an 8 3/4 early A?

With stock wheel wells on a 65 Cuda you can fit a 17 X 9 rim, with a 275 tire. I have the springs moved in and the rear end set back 3/4 of an inch to centre the wheel in the wheel well. I have a stock 69 A body 8 3/4 with 4.5 pattern and wildwood disc brakes.
My rear rims are +24mm with a 5.95 back space.