slip yoke problem / TF 727

hmmm, i bought this one from denny´s driveshaft, should be the correct one?

1 x [20729055] Slip Yoke 7290 Series 727 auto & A833 manual with 29/30 spline output

The trans is from a 1973 coronet station, does this matter?

Maybe i write an email to the vendor to see what they say. Bad that i´m overseas, no chance to ship this part back if it´s wrong...

thanks for the info!

Michael