I agree with LS1Fever, if it were so simple then every 4g64 owner would jump all over it being that they want turbo. Instead they turbo the 4g64. If it was simple it would be more common and heard of. If it were so simple I would drop a 4g63t in my car instead I'm not I'm boosting the 420a. I want to know what makes this swap so simple then what it seems?