Just spotted this info on another site.....
I've recently transferred an older demountable (1995 Island Plastics Suntrekker) to a new pickup (2006 Ford Ranger) and it was not at all straightforward. Demountables and pickups have both changed enormously in design over the last decade. After doing extensive research into all of the available pickups, the Ranger emerged as the only one which could accommodate the Suntrekker and even then the process involved attacking the Suntrekker's fibreglass body with hacksaw, file, etc. and I had to get new fixing brackets fabricated. In the end the result was worth the effort - it drives really well - but there's always going to be an element of risk unless you can put the pickup and demountable together for a test drive before you buy! If you decide to proceed, try to buy a demountable on an old pickup then, if all else fails, you can always bail out and resell the whole