pinion angle with a 2 link?

How is the pinion angle maintained with a 2 link?

I had planned on using your normal 2x3 box tubing to make a 2 link, and just mount them where my old springs mount, but i'm curious if the axle will roll.

I'm thinking not, because the axle is mounted exactly the same way as if it had leafs on it, and it does roll with leafs, soo..

I guess I just need re-assurance.And I don't have room for a tri-angulated 4 link or a wish bone.