So this morning about 3/4s the way to work (32 miles one way) I accelerated from a stop light and got this odd yet some what strong vibration on my buttocks. lol U joint on rear drive shaft? If so... where the heck can i get a u-joint for it?? Talked to a few locals (autozone, advanced, etc) also talked to JerseyParts at Cherry Hill Nissan. No go for a part number. Any suggestions? And also... Headed out to Rooks Run at Rausch Creek for the weekend today, safe to wheel? Thanks in advance!