Slip yoke question

I'm swapping a T-5 into my '64 El Camino and will need to shorten the driveshaft. What I need to know is what slip yoke to use for the
t-5. The trans is from a '91 S-10 and was behind a 2.5 4cyl. What size is the trans output shaft and how many splines. What vehicles will be good doners? Thanks in advance, Armstrong

 

Should be a 27 spline, any 350, t-5 or similar trans. Common size, driveshaft shop should have available new.



jerry