You probably won't get factory aluminium front wings for your 4/4. Your chassis is shorter than the current 4/4 and Plus 4 models; their chassis are based on the post-1975 Plus 8 chassis. In addition, the shape of the Supaform wings is differant that tne earlier wing shape.
I've had front and frear Rutherford fibreglass wings fitted to my car since 1990. They are fit and forget. Only the anally challenged or concourse fanatics will baulk at them for reasons of resale.
The other option is to acid dip and repair your existing wings. Steel wings are probably worth repairing depending on condition; pre-Supaform aluminium wings are probably not worth repairing unless you have loads of time, can weld or have a very good friend whocan. The steel beading and aluminium react causing serious corrosion.
Pre-Supaform wings were made in Manchester and the firm that made them is still in existence.
