Rear Bearing swap, save alignment?, bearing swap Options

[tomrev]

I'm having a rear bearing type noise, and may be R&R-ing them. Normally, I'd pull the rear arms to do it on the bench, but have had a pricey alignment, and hate to re-do that. One possibility is to struggle with the R&R of the bearings with arms in place, the other is to attempt to mark the arm positions, and replace, once the bearing s are swapped. I'm questioning weather it's possible to replace with enough accuracy, to avoid a return to the alignment shop. Have any of you guy's gone this route?

Secondly, as the bearings seemed fine when I assembled the car, can the CV joints make a similar noise? I have the bigger 108mm CV's in and out, and did not re-build them, as they too seemed to look good inside, so just cleaned them, and used new grease. Thanks!