Rear end higher than trans output...okay?

[absintheisfun]

67 camaro with a heidts subframe and a ridetech rear setup.
I have all the recommended mounts from heidts.

The ls/t56 sits perfectly without cutting the body but...the trans output angle is 4 degrees down. Not ideal, but not horrible. After squaring the rear-end (which was a pain) and getting the pinion angle 4 degrees up so they match, I noticed how close the pinion is to the floor pan, and it kinda has me spooked. Its only about 1.5-2 inches from the floor pan at ride height. Is this okay? I was measuring for a driveshaft and realized that the driveshaft will actually be going uphill. I'll get some pictures up in a bit, but is this a common issue?

To raise the trans up, I will have to modify the tunnel. With the car this close to done, I don't wanna do that if I can avoid it.