8.8 swap
I just got "tasked" to cut an 8.8 for a 68 Barracuda. I got 2 short axles and determined the long side needs exactly 3 inches sectioned out. I was going to take it from the inside part, right next to the center section and the vent tube fitting. Cut it, section it, Slip axle back in, C-clip it, use some L brackets and Vice grips to center the new length and tack and weld. He can worry about removing all the brackets. Offset is not a big issue, the driveshaft only needs to be on the same plane at the driveshaft slip yoke and the pinion angle, and that can be up or down 3-4 degrees depending on what power and rear suspension you have.