I had a PB lap of 1:41.5 during the time trial session with Lightspeed but GoPro fell off the moment I left the pit. This is from the session prior where I did 3 back to back 1:42.x. 

I decided to install the KW V5 coilovers. The stock setup is capable, but I prefer the feel of the setup and balance that I had on my previous C8. I also found the OEM sway bar lacking—GM fitted the Z06 with a softer bar than the C8 Z51, which makes the car feel a bit lazy. Fortunately, Eibach offers a set that’s slightly stiffer than the Z51’s, and it pairs nicely with the KW coilovers.

Mods:
Brembo BM6 380mm BBK - front & rear Endless ME20
KW V5 w/ custom spring rate
Eibach Sway Bars F&R
APEX 20x10 and 21x13 
Eagle F1 Supersport R 275/35ZR20 & 335/30ZR21 N0
RACE2 TC On