As far as im aware no repair sections are available for the front wings. If you were to use sections from good wings i should think that the amount of work required would far out way the cost of new wings which are still available from toyota.
Yep - not worth the work on the front. The wings are just bolt on and replacing would be quicker and give a better result. £110 ish from Toyota new or look in the for sale section/ post a wanted add on here. Or ebay as you may even get the colour your after.