WTT, trading a full gutted downpipe and straight piped mid pipe for 100% oem exhaust

i would like to trade my full midpipe and downpipe for a stock exhaust for some warrnty work and possible selling the car for Mercedes c400.



so far my downpipe is gutted and gave me alot of hp, i raced bms downpipe car and were the same.



the second thing was a replaced mid cats with straigh pipes.



i live in Daytona beach FL