1967 gs buick 400

I Going To Paint This Car, The Transsmission Is Leaking Bad, If You Look At It You'd Think The Front Yoak Is Leaking In The Center, So I Pulled The Drive Shaft It Looks Like It's Supposed To Have A Hole And The U Joints Look Pressed In Need Some Help (it's A 3 Speed Automatic) JUST READ THE ANSWER TO MY QUSTION BUT ARE THESE U JOINTS PRESSED IN

There is supposed to be a plug on end of the yoke something like a freeze plug so it looks like its time to weld up or new yoke.

thanks u joints pressed in but felt good, cleaned up with a grinder and used popicicle stick and j b weld so far has held up