Hi Andrew,
If you can, make it down to Corvettes at Carlisle show at Carlisle, PA. ZR-1 net registry, I believe, is the largest club presence at the event. You can expect to see 50 to 60 C4 ZR-1s at the event. I am sure that you will get more than enough suggestions, opinions and perhaps even run into ZR-1 or two for sale.
Also, ZR-1 net registry serves the best pulled pork sandwich bar none.
https://carlisleevents.com/events/ev...es+at+carlisle