Novice driveline question

[tx99gtp]

I have been contemplating the installation of my rear suspension and rear end, but hesitant to proceed to fully install because of the drive line angles. I plan to mock everything up, but wasn't going to weld the spring pads on the axle until I had the front suspension in with motor+trans. I'm concerned about the drive line angles, but am I over complicating things? I see plenty of rolling chassis that have a rear end with no power plant. I suppose shims could be used to adjust the rear pinion angle after the fact. Thoughts or suggestions?

Thank you.

- Josh