As far as I'm aware the inner wings are the same. I don't have my sheetmetal catalog handy, so I'm not entirely sure if the front (the large complex bit at the very front between the wings) is the same - probably not. The indicators are different, so you'd need to change the front wings (or do a welding job on them), obviously the grille, headlights and bumper, and if you want it to sort of look original under the hood as well change the radiator overn -- the inlet/outlet pipes are situated differently and the dimensions are slightly different. The newer style would probably fit, maybe with a bit of work/mod.

Bram