I met a fellow charger owner who had a nice set up. 2010 charger r/t but he said he had it taken to the dealer and had it bored out to about a 6.1. He said it cost him about $1200. I began looking into what he said and the only thing I found to change a 5.7 to a 6.1 are stroker kits that run about $4000. Can someone provide me with some better insight on what has to be done to increase displacement?