Honestly, this is my wifes Xj, I have a very built MJ, with heavy duty everything, I use it primarily for the offroad stuff, but I wouldn't mind taking her Xj out every once and a while. I don't know much about these lighter axles, since I grew up driving FS vehicles. If I spend the money on an axle, I am the type to go ballls out, and just do the D60 thing, and eliminate the even slightest risk of breakage. I just spent the weekend putting a SM465 w/D300 into her Xj, just so I don't have to worry about another tranny breaking. Well I guess I might as well plan on the heavy duty stuff for her Xj also. Thanks for the input.