the srt is faster by a few tenths...that is about it....btw a manny srt8 has 392 gears as well so put 2 and 2 together and ligically the srt 8 is faster....you should race a stock srt8 vs your RT with just a exaust by mrbp and it should be a good race....also remeber paladins car is a auto which equals consistent times....manual cars srt8 or not, it is up to a driver.
I could race a stick civic and beat a manual challenger if the driver spins too much and cant shift..