Should be about the same. It's the front one you may need to find a replacement for. Your better off ditching the 203 while you at it. Too heavy & full time is never any good for a truck,(poor G.M. idea) especially these days with the gas prices..........P.S. With that 400 you have you could slap a 205 part time on it with a std.trans. rear shaft and it would work.(205 being shorter & 400 being longer).