I Don't know about the GT500, but the 6.4 liter Hemi is most likey dead for the Chally and Charger, but its been talks about upgrading the 6.1 like they did with the 5.7
Variable Cam Timing, or VCT for short, ...............doubt it
The first rule of modding something that's not American is to not try to compete with modded V8 cars that are American. Really, they can run insane power with little investment. It's not even a fair fight.
Camaro 2SS RS
, White Rally Stripes, custom fuel door: Status: going to the dealer: soon