Hello, I bought a 1992 Wolfsburg cabriolet, for $900, it came with problems of course, both of the front wheels feel like something is grinding, the owner said the cv joints need to be replaced. I took the car to the shop to see what they said and they told me its "the bearings", a 4 hour labor, and $45 dollars each bearing, is it the same if I change the cv joint? And save money+time? Is it a hard diy? Also, I'm getting charged 650 for a new top