I just purchased a new tow rig. It is a 1995 GMC 3500 crew cab 4x4 with a dual rear axle. It was at one time a state truck this is where my concern comes in.

It does not have a bed. So I just started to look into finding a bed. The little I looked around on the net has me concerned that it may not be a standard length frame. I also noticed that there are a few different width frames and axle widths.

So before I purchase a bed what should I measure and where to find out if I can use a regular bed?

Also if it is a standard frame like most people would purchase rather then the state how odd would it look with a non dually bed but with dually wheels? Any pics?