I am thinking of going to a 31" tyre, my axle is 1" back, will they fit.
About your car, i had 29.5 slicks in the stock location but only 10.5 wide.
Mick

69 Dart GTS 440 mopar .590 cam, Edelbrock heads, 3200#
best et 6.45, 106.78, 10.14, 132.88 mph, 1.47 60ft
best 60ft 1.36