Of course its possible. Any running gear can be transplanted to any other chassis, providing there is physically room for it!
You clearly couldn't put the running gear out of a lorry into a mini for example because it wouldn't fit.
The argument always remains, why bother? If you want something that drives like an 80, buy an 80. The actual amount of work involved is probably going to outweigh any (dubious) benefits.
People put standard diesel lumps into classic cars for a living, so I don't see why this would be any harder, at least your staying with the same manufacturer, but remember you'll also have to change the wiring loom and probably modify a lot of the mechanicqals and the chassis to fit. Your not going to do it with a hammer, a can of WD40 and some string over the bank holiday weekend.