Disk brakes 1977 volare into 1968 barracuda

YY1 said
Might be in your best interest to switch to 5 on 4.5.

Relatively easy to find a 66/67 B body 8 3/4 or F/M body 8 1/4 that is a virtual drop in.

I already have a 8 3/4 axle for an a body, so I guess I'd need to find some axle shafts that would fit in?