Older information needed

I have a 89 22 ft Layton by skyline 

What I'm looking for is the empty gvw and the cargo capacity  and  tongue weight . I have looked on skyline's site , no help at all. 

There's tags on the frame from the frame manufacturer and Skyline but no GVW , cargo capacity or T/W  

Any help is appreciated 

Picture below shows my rig