$2,249.99 for APR ECU software
$? for APR TCU software
$10,267.78 for two RS7 Turbos, gaskets & hardware, hoses, AWE S-FLo Carbon fiber intake, AMS turbo cooler system
http://www.ngpracing.com/home/?p=3611
http://www.goapr.com/products/turbo_long_40tfsi_c7s6s7.html
You can pick up a used 2013 S6 for $50k now.
http://www.cars.com/vehicledetail/detail/642401390/overview/