So i installed my PORC sye and a front drive shaft and i still have a vibe.
i replaced all the u-joints in the drive shaft and removed my transfer case drop. I still have my 3* wedges in the rear only because i just replaced my U-bolts and i dont want to change them until i have done some trouble shooting and the wedges really have to go. The sye was installed correctly so its not the output shaft.

ooh right i have 5.5" of lift and i will add a pic shortly.

any ideas?

 

Pinion needs to point directly at the t-case with an SYE installed. Cut off the spring perches and reinstall new ones with the pinion angle corrected.