Do a careful inspection of the old one. Make sure the caps fit firmly in the yoke and are properly centered in the yoke. Set the yoke's snout on a piece of glass or other know flat surface and measure (With calipers) from the surface to a machined spot on each corner. The measurement should be the same number all around, if not the yoke may have been damaged and needs further inspection. We've all see that guy at the swap meet with a dozen rear ends thrown in the back of a truck. He's usually the problem.
Several years ago I solved a vibration issue by replacing the damaged yoke on my Burban. An inspection revealed a damaged tang on the yoke that allowed the U-joint to be installed off center. Another gift from the PO. See photos.
As steve25 says no reason to change unless you suspect something.
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If it breaks. I didn't want it in the first place.
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69 GTO \ 72 FIREBIRD \ 1/2 OF A 64 GTO \ 70 JAVELIN \ 52 FORD PU \ 51 GMC PU \ 29 FORD PU \ 85 ALFA ROMEO SPYDER \ A HANDFUL OF ODD DUCATI'S \ 88 S10 LT1 BLAZER & MY DAILY DRIVER 67 SUBURBAN.
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