I was wondering if any late 80's F250 owner could shed some light on my problem. I have a 1987 F250 Super Cab 6.9 litre diesel 2WD, 4 speed manual transmission. I cannot find any parts person (Ford or Other) that can tell me POSITIVELY what are the positions for the proper U Joints. On the split (2 piece) driveshaft there are 3 U Joints with a Center Bearing. I have been told that the Front (transmission) U Joint and the Center U Joint are the same and the Rear U Joint is different. I have also been told that the Center U Joint and the Rear U Joint are the same, with the Front (Tranny) being different. Lastly, I have been told that the Front (tranny) and the Rear U Joints are the same and the Center is different!!!

Can anyone HELP me with my dilema, and possibly provide me with the proper part number. All I know is the U Joint numbers are 354 and 434 of which I need two of one type and only one of the other type.

I would TRULY be thankful for any information that can steer me in the right direction......