'54 cadillac hydramatic slip yoke

From the research I've done I've found that this is a different spline type than a typical th350/400 or any other later GM output shafts? Can anyone confirm this? How would I go about finding a slip yoke for something like this?

 

btt

 

Will any 16 spline GM yoke work?

 

anyone?

 

Have you got the transmission & can do a spline count & get the bushing I.D. it rides in?

 

I'm pretty sure the cadillac is differant. I beleive you will have to use the stock cadillac yoke, 49-62 olds should be the same. Also the Lasalle 3 speed has the same spline, Sorry I know this doesnt help much....

 

Yeah I have the transmission, and it's a 16 spline but I'll have to measure the I.D.

actually that helps a lot, I wasn't sure if earlier caddy stuff would work and I definitely didn't know about the olds... Thanks!