front track width

[wayn50f1]

I ass-u-me "same" but ask anyhow.
Do we know if the front track width of a 65-66 is same for front factory drum versus front factory disc brake cars.
As in wheel /tire back spacing issues between drum disc cars.

 

[Midlife]

For 1966, Ford's sales brochures state that the front treads are 55.4" (6) and 56" (V-8). Could this be due the different width tires?

 

[ClassicRecreations]

For 1966, Ford's sales brochures state that the front treads are 55.4" (6) and 56" (V-8). Could this be due the different width tires?

It would almost have to be the tires or wheel offset. We have built these with both and do not see any difference.