Howdy Guys, I took apart my driveshafts to figure out whats causing a big vibration on acceleration. I assumed the carrier or center bearing would be the first place to look, which was also leaking trans fluid out of the bracket. After I pulled the front U joint from behind the transmission and inspected it I noticed that one of the rings was missing that I assume hold the trunnion bushings? down. From what I know they do not make these front u joints for 3/4 ton trucks anymore so they are only available NOS. I have attached a photo of what is missing. I have not pulled the carrier bearing apart to inspect it, but should I guess that the front U joint was probably causing a majority of the big vibration? Look forward to your comments Thanks!