$1500 Complete RS6 heads with valve covers
$350 Complete RS6 intake manifold with throttle body
$2,000 Sportec Rs6 turbos w/inlets
$400 RNS-d
$1,000 Custom tubular exhaust manifolds (T4 flange). You will probably need to cut the flange off at the turbo side and redesign for whatever turbo you want to run.
Have more pics pics but this is difficult on mobile will try to upload