8.8 swap

I was told yesterday that every degree off straight alignment from tranny to differential results in a loss of 15 HP. Don't know if it's true but I'm curious about this issue and how the drivelines are lining up on these swaps compared to factory.

I suspect a Mustang diff has the pinion centered and tubes the same length due to no transfer case causing an offset to the driveline.

Someone mentioned an 8 3/4 has an offset pinion. I presume then that the tubes are different lengths to center the driveline?

I'm debating now over an 8.8 swap or a Ford 9". My local auto wrecker has Ford 9" non posi units for $200 and wants $500 for a 95 mustang 8.8.

I have not seen much info about how strong the 8.8 is but suspect it may be comparable to an 8.75 which is also likely similar to a Ford 9". Just guessing.