Late model rear end

I would be concerned with the pinion and trans not being inline. You are going to have two angles to deal with. The drive line could possible hit the floor also. I would suggest contacting a race car chassis manufacturer on the compound angle drive line. These guys do this stuff for a living and will have the definitive correct answer instead of us home brew engineers deciding what is right. Some day some one else may own these cars we work on and we don't want a time bomb just waiting for the right moment to go off and possible hurt someone.