Hiya Wayne, what happened to your plan to build a motorhome? (fellow motorhomefun.co.uk member here
To be fair I seriously doubt a 4X4 is do-able simply because the trans tunnel will not accomodate the transfer box and the forward axle prop shaft would be between the drivers legs. I vaguely recall someone else planning to do a 4X4 using Mondaneo running gear but haven't seen anything of it for a year or more.
I'm building a bastardised version of the Haynes but based on Locust chassis (polite words for piece of crap) spaceframed using the Haynes design as guidance and using a BOA Cosworth V6.
D.