Pictures seem to show that 1 new wing is required, but if insurance has put it up for salvage my guess is that the frame has been twisted.
To give an idea of cost. My 4/4 had two new wings & cowl plus other front end bits.
£10500 (2014)(Frame/Chassis was fine)


4/4 Ivory 4.1:1 axle, Mercedes A200 AMG