Spider Sills

[slowe]

Hello,

My 1978 Spider needs the sills (and more) tidying up, however the sills themselves are of the smaller 'step' variety and the rear base of the front wings have the larger 'step' which makes them look rather awkward. I see on the parts section that there were differing 'step' sizes according to the Series of the car. Should a 1978 Spider have the smaller stepped sill and wing base or the larger ones?

Thanks
Simon