Wider Rear stance for Duster

I have a 73 Duster and the rear axle assembly is more narrow than the front resulting in an awkward stance. Is it a reasonable suggestion to use 2 inch spacer blocks on the rear to bring the rear more into line with the front.? This is purely a cosmetic mod as this car is taken out for rare driving occasions and not driven hard. So the impact of performance is not really an issue. The car is fitted with Stock 14 inch Rallye wheels BTW.