Hey guys, has anyone got any decent pre 1990 Rangie Classic chassis drawings?

I've currently got the drawings from the manual on the RAVE CD, though ideally I'd love some 2D or 3D CAD drawings in .dxf format or something.

Somehow I reckon I've probably got more chance of winning tattslotto, but I thought I'd ask anyway!

The reason is I'm wanting to build a combination motorbike / camper trailer using the rear of an 88 Rangie.