[whitesswj]

nope no diff P/N. I got to looking at LWB ans SWJ and the differance in length of the frame or bed dosen't lie in the wheel back, it lies in the wheel forward. In other words, if you measure from rear bumper to the back of the wheel well - it's the same distance no matter if it's LWB or SWB. the differance i've noticed is the fact that if you mearure from the front of the bed back to the front of the wheel well.

that's where the differance is.
and if that's the case then there is no differance in the length of the overload aux. springs.
sswj