my buddy had one of his CVs replaced with a CVJ rebuilt axle. I recommend the axle because I hear they are very good and guaranteed for life. Under light load and deaccelartion at rooughly 35 mph it makes a whooping or thumping noise. It doesn't pull on the wheel, or vibrate. But, you can feel it in the floorboards. I looked and the joint is not leaking or misaligned. Any ideas? I'm needing replacements soon and now I'm concerned about CVJ as an option.