Your rear will be fine with little to no hub. The front needs the clearance for the caliper. But none of your front numbers make sense. 7" wheel" 5" back space? 6.3" backspace? If I was running a 7" wheel, I would be looking for a 4" backspace, or even 3.75" backspace. If your backspace is 5" or 6.3, your wheels are going to be sucked in way to far and look like drag skinnys up front from the side profile. Not to mention narrowing track width.
Lay a straight edge across the back of the wheels and measure to the hub face that mounts to the spindle. That is your backspace.
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Frank Serafine
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