Alright so I've been getting a violent shake in 1st/2nd gears under moderate to heavy acceleration. Got under the car today and discovered that my CV joint is bad.. didn't get a chance to check out the center support bearing but I'm sure being original at 150k miles it can't be far behind. My main question: If I replace the CV joint and CSB, will the driveshaft have to be re-balanced? I know the CSB doesn't have much effect on the balance; my main concern is the CV joint and whether replacing it will have any adverse effects on the balance of the driveshaft. My other option is to purchase a used 90k mile driveshaft for $350 shipped. I'm a little wary of buying a used driveshaft though, so I'm leaning towards fixing my existing one. Comments/advice appreciated, thanks!