Transfer Case Rotation?

[snufelupogus]

Hey, Im doing a custom conversion and I require the transfer case to be rotated down to reduce the angle of the driveshafts and give the driveshafts some more clearance. My question is, is this okay for the tranfer case? If I am able to circulate oil through the top and out the bottom maybe?

For example, if the transfer case normally horizontally, can it be rotated so it sits vertically?

Horizontal = Input <-> output

Vertical =
Input
|
Output

Thanks for your help!