Ok guys, I got my 14ff and dana44 and am getting prepped for a weekend install. The guy I got them from threw in his old driveshaft that had the conversions u-joint on it but it seemed to be really tight on the driveshaft...they should be rotate smooth as butter right, but with no shake? So I figure screw it, I will get another one and install it on my driveshaft....then I look at it....how do I install a new u-joint? Anything I should look for? Oh..know it has been asked...I am going stock 1/2 ton to 14ff..the ujoint I need is either Neapco #2-1153 or Napa 447 right???