The Precision u- joints are ok, but becareful when and where you get them. If you go to a parts store and tell them 344 as a part number, chances are you won't get Precision u-joints. The Precisions also have the grease zerk on the cross tree whereas the Neapco's have them on the end cap. Makes it real nice for maintenance.
When rebuilding the front have patience and take your time. If the u-joint won't slide on easily, make sure you didn't lay a needle down in the cap.
To get real Precision products at a decent price if you ecide to go that route try
www.RockAuto.com
Stay away from the NAPA u-joints, they are junk.