If you removed the u-joint, I personally would take the opportunity to put a new one in, they aren't that much...
As for the Vibes, where it is feel like it is coming from? Drivetrain, suspension.... Chris Lucas
www.73-87chevytrucks.com
www.captkaoscustoms.com
Project Su
Jimmy 2WD Project
Hopefully it is not your pinion gear. If it is a deep roaring sound upon decelerating, it may be that. SgtDel
aka "Andy"
www.delbridge.net
1979 Big 10 383 stroker
1991 Blu 'Burb 3/4 ton 4x4