anyone got good info on diff pinion angles? especially for drift...

ive done some research into pinion angles and the majority of people like to have the diff nose down 2-3 degrees so under load its even, however those setups all seems to have the diff nose below the level of the gearbox.

my pinion sits above the level of my box so i cant quite picture in my head the angle it should be.

also all the aftermarket items for antisquat all lead to pointing the noise of the diff higher not lower, which goes against what all my research on what chassis tuners do.

any ideas anyone??