I saw that rcv makes a upgraded cv axle for lifted trucks. Well I call up rcv and they say it's only to help with angles and isn't to be used for offroad. He said he wasnt going to be supporting these axles anymore and have NO warranty at 495 a side. So there goes that idea. Who else makes some upgraded cv's? Also I seen that someone makes adapters to fit a 2500 axle on 1500. What's the benifits? Strength, longer, more angles?