1965 A body 4 speed ball and trunion to Slip yoke ?

Just posing the question. Why do you want to change it? Do you somehow think the slip yoke is better or stronger? The ball and trunnion setup is actually arguably stronger. Remember, Race Hemis and Max Wedges had them.
That was gona be my next question. My buddy that is doing my port and polishing for my 340 that we are gona get 450hp out of recommended it. But i guess i need suggestions on whether its really needed ?
Just posing the question. Why do you want to change it? Do you somehow think the slip yoke is better or stronger? The ball and trunnion setup is actually arguably stronger. Remember, Race Hemis and Max Wedges had them.