Hey guys! I have a Ssv ls3 6.2 ltr. My only mods are a VCM OTR and a custom tune. The car has done 45,000km. I am after more bottom end and midrange grunt. Its a heavy car as u know so i want to make this beast hussle especially off the line. My options are a full exhaust system with a re-tune for around $4k or a cam for around $4k. Its either one or the other NOT both. Which path should i take? Will the full exhaust be sufficient? I am worried about driveability issues with a cam and not a fan of lopey idles.