8.8 swap

I was considering 3 different options:
1. Shorter shocks and just welding new shock mounts to the axle housing.
2. With some heat, twisting the ford shock mounts to the correct angles.
3. Buying a set of dana 60 or 8 3/4 plates and ovalling the holes a bit to fit.

#3 sounds like the logical choice since their readily available and they'd put the shock mount right were it'd need to be but why would you need to "oval the holes" to make them work? Aren't the 8.8 axle tubes the same diameter as 8.25/8.75" rears?