Ok i'm still learning all about my Camaro so bear with m e on this question please haha So obviously the Automatics are the L99, and the 6-speeds are the LS3. Now the difference between them is new heads, new cam, gears, and ported throttle body? And what is the HP/TQ difference? Also, wht do I look for when getting new gears for my L99? My friend keeps telling me to put 4:11's in.