Bad as in worn, I had the same issue with my first Fox many years ago. They looked and felt good but once removed you could see missing pins.

Quote Originally Posted by joe dick View Post
u joints are bad meaning worn out or wrong ones? they are on an low mile aluminum driveshaft and look brand new, what is the difference between u joints for an aod and those for t5? checking parts online says there is a specific u joint for aod and one for t5 manual. Anyways gonna get u joints for manual and switch yoke from old driveshaft onto new one and see what happens.