Replace Inner CvJoint

i was suffering a vibration at acceleration speed 80km to 90 km then it gone
and after a kick down. suddenly the car started to vibration from 10 km to 100 km
and i figured that the inner cvjoint need to replace
i got a new one and install it then every thing come to natural
Note. also before i change the cvjoint i was hearing a crack when i put the reverse shift. after i change the cvjoint. the sound gone.