Backspacing

[wgamble]

So I have 79 f150 full width axles on a 66 Bronco.

Question: Would 5" of backspacing be too much backspacing given the axles are a little wider than the original axles that came under it?

From what I have read, the Bronco axles were 58" and the F150 axles are 65.25" so that should just make it a little over stock r

 

[zukiscott]

Tire size?....might get tires into front radius arms with huge tires and that much back space ...dunno tho