1963 valiant front runner sizing suggestions needed

Sorry for the delay. Was on holidays for a bit. Valiant is on lift now getting ready for spring.

No troubles getting info for you.

Flange to flange dimension of the rear axle is 52.75" +/-. This confirms from an A body. The distance from the outside of rear tire to outside of rear tire is about 66" even.

Let me know if you need any other measurements, pictures etc. Car will be on the lift over the weekend as changing oil, fan, plugs and few other odds and ends so I can actually drive it this summer!