They weigh ~3150 and with your basic exhaust mods, wheel/tire setup they're gonna drop ~100+. Simple math isn't actually that hard for you, is it? So what does yours trap? I'm guessing high 130s like the other 90% of HCI Zs.I own an HCI C6z, shit-for-brains.
They do not weigh 3000lbs
650 is pretty aggressive. Maybe on a mustang dyno set to "hero." Mine did 580 whp and it is built pretty well. Most are ~560.
There is no such thing as an auto c6z.
PS 9.6 144 on a run of the mill HCI hahahah
Regardless of all this, you're now saying the Z is MORE efficient than the 720S, you do realize that right? They weigh damn near the same, and you're claiming the Vette traps the same 100 HUNDRED HP less.