Thanks for that Steve. [Nice colour Guards Red.... but then I'm Biased....] I paid a visit to Specialist Cars at Malton to get some inspiration....they had a 996 Turbo so 'popped' the lid and sure enough the 'rams' would go straight through the Airbox on mine....Hmmmmmm! They had a Silver Turbo lid in stock and offered to fit it but I could see it wasn't going to be straight forward so I think like yourself it's an 'aftermarket' Jobbie for Me! I'll look up the TechArt on the Net......[I think after the wide bodied 22B Subaru with it's adjustable top wing, standing nearly as tall as the car...the Spoiler for me has to be a bit less 'discreet' than the Turbo Anyways]....Then it's the front lower lip and she'll be right as they say!
That wing certanly adds something to your car, by the way... Looking Good!