Viper SRT10 rims on a 65 Barracuda?

22X10, 20x10, 22x9, 20x9, 5X5.5 +25.4 offset. 6.5" backspacing.

To the OP. In the rear this would be a potential issue if you have the 10" wheels. . Unless you ran a rear that was about 1-2" narrower than stock it will not work. The 9" will if you use custom axles but will not with a BP adaptor.

In the front you are limited to 2.5" to the outside. The 10" wheel has 3.5". It will not work, period. The 9"wheel has 2.5" which would work but only if your brake rotor had the 5.5" bolt pattern. It will not work with a BP adaptor.

In the rear. With a rear end that was 2" narrower than stock you can use BP adaptors and make it work. With a rear that is 1" narrower you can use 5.5" BP custom axles.

I the front you need to have rotors with the 5.5 pattern. It's the only solution.
I've got a second housing that will be shortened for the wheel tubs anyways. I haven't figured out how much to shorten just yet but I'm not too concerned. The axles will also have the 5x5" bolt pattern so I think the rear will work when I'm ready. The thing I'm concerned about is the front. Besides getting the correct bolt pattern in the rotors, what about tire rub on the control arms and the fender? That's really my main concern now