Hi Matt, Welcome from a fellow "Brit"!
Is that a Rover lump hiding in the back of your rail. I'll bet she goes well!
Back to the main subject....It's your truck,do it the way YOU want. To fit all the bodywork on a later chassis is do-able but a lot of work.
The other option is to upgrade what you've got i.e Brakes/steering etc. There are plenty of vendors in the links section who could point you in the right direction.
It's all down to how much £££££'s you want to spend.
Nice truck anyway!
Jock
