wtb: Driveshaft for 65 dart 273 4sp 8.75 trunion
The problem with ball and trunnion is not strength per se, it's the present day COST if you need parts for the things. Since you need to spend money getting a shaft made/ shortened, it's silly to put money into one of 'em.
Trucks were once chain drive. I don't think you see many anymore. There are better ways to do things.
[ame="http://www.youtube.com/watch?v=rwfbxT3JvXU&feature=related"]1959 Kenworth Chain Drive - YouTube[/ame]