Hilux dual cab conversion

I currently own an '84 LN65 single cab hilux. I really need the extra seating capacity of a dual cab. Before I got through the hassle of changing vehicles, I was wondering if anyone had any experience swapping the actual cabs over (single to dual). I have got most of the problems with the current vehicle fixed and am happy with the reliablity.

Other option I guess is to switch the drivetrains over.

Any thoughts on the availabitly of donor vehicles and the compatability of other model hiluxes (newer and older).

Thanks

Greg