luke, nice cars you got going there...in my opinion, i would take the c43 only if u sold trhe 500sec..dont really need the small liter a6 with turbo when you have that 56 belair of yours pushing out more horses than 10 civic dx's...in my opinion, the audi a6 is a beautiful car...one of the best european stylings out there behind the mercedes...go for the 4 liter a6...that would be my choice..any a6 going down the road with those awesome purplish-blue xenon lights turns my head everytime...good luck..and thanks for the tires...they are absolutely beautiful...cant wait to get the lugs from cec, and then i can finally put them on...

Ben