Need to know stat...m-body 8 1/4

I have an 8.25 from an 85 Diplomat Cop Car under my 68 Barracuda coupe. Had to move the spring pads in (less than an inch) and yes it does stick our about and inch on each side. Drive shaft had to be fabricated. but if you want to, you CAN put an M 8.25 undar an A body