help selecting slip yoke

[freshayr]

I have switched frm a 904 to a 727. I need to shorten the driveshaft and I need a new slip yoke. YeaR oNE LISTS 2 yokes for this application. One uses the small 7260 u joint and one uses the larger 7290 u joint. I would assume that since this was a 904 driveshaft I probably want the smaller u joint. Anybody have experience here?

 

[Larry Dart 360]

Could be both Mine was a /6 and it had the small joint..I have a driveshaft out of a v8 car and it was the small one as well..Pick up both of the joints and bring the wrong one back..That is what I had to do the first time I replaced a joint