New vibe felt

[randrews@post.cis.smu.edu (Robert Paul Andrews)]

I am feel a slight vibration in my 90.  I can feel it more when I drive
around 50mph in 5th than higher speeds.  Currently have 1 rebuilt CV joint
(outer) and one inner that has just developed a crack in the boot.
CHanging it tommorrow.  It has new wheel bearings in the front
and brake pads.  Struts are in reasonable condition.  What could it
possibly be?  And advice....Thanks is advance
ROb
randrews@post.smu.edu